Fishing the Po Delta: the catfish, the sea bass, the licences, and the plan

What and where it is

The Po Delta is where Italy's largest river, the Po, meets the Adriatic across Veneto and Emilia-Romagna. It is a flat, fertile maze of braided freshwater channels, brackish lagoons (the valli) and coastal mouths, and a UNESCO biosphere reserve. The defining feature is contrast: big freshwater catfish upstream, saltwater sport at the mouth.

The Po rises in the Alps and runs the length of northern Italy before it fans out into this broad delta on the Adriatic coast. The delta is low, wide and wildlife-rich, a patchwork of distributary channels, reed-lined lagoons, fish farms and farmland sitting barely above sea level. The main channels carry the river's freshwater fish; the lagoons and mouths are brackish, where fresh and salt water mix, and that is where the sea fish run.

What makes it special is that single water holds two very different fisheries. Upstream, in the river and the freshwater channels, are wels catfish that top 2 m, the giants the Po is known for. Down at the brackish mouths and lagoons are sea bass, gilthead bream and mullet, fish you would otherwise chase on the coast. You can plan a trip around either, or both, on one delta.

The bases are the delta towns. Porto Tolle sits in the heart of the Venetian (Rovigo) delta, near the main Pila mouth. Taglio di Po and Adria are upstream bases on the river and channels. Goro and Comacchio sit on the Emilia-Romagna side, by the lagoons and the southern mouths, with Comacchio famous for its lagoon and eels. The delta is reached easily from Venice, Bologna or Ferrara.

One thing to fix in your head before anything else: this water sits across two regions and across the line between fresh and salt water. The river and channels are freshwater and need a regional licence; the brackish mouths and the open sea are sea fishing and need none. Which rules apply depends on exactly where you cast (see licences below). Most visitors targeting the catfish let a guide handle the freshwater side.

The fish, and where, when and how to catch each

Wels catfish are the freshwater headline, regularly over 2 m, fished from a boat on heavy gear in the channels. At the brackish mouths, sea bass are the sport draw, with gilthead bream and mullet alongside. Carp, chub and asp fill out the river. The cards below give where, when and how for each, and which rule applies.

Others, for context. The freshwater channels also hold carp, chub and asp. Carp and chub are river fish on the regional licence; asp takes a lure on the gravel runs. They are not what most visiting anglers travel here for, so the cards above are the trip. If you want a carp session, ask your guide which channel fishes best and make sure your freshwater licence and permit cover it.

I have set each species out as a card. Read the one for the fish you want, then check the seasonal section for how the fishing moves through the year, and follow the rig link to build the method. Read the "what you can keep" section before you do anything with a catfish, and check the minimum sizes before you keep a sea fish.

How the fishing changes by season

The delta fishes two seasons in one. Catfish run best in the warm water from May to September, feeding hard through the summer in the channels. Sea bass come into their own in autumn into winter around the mouths and lagoons, with mullet and bream through the warmer months. So summer is the catfish trip; autumn balances toward the salt.

The strip shows the broad arc, not legal open seasons. Exact dates depend on the region and the water. Here is the year in plain terms.

• Spring (March to May). The water warms and the catfish begin to switch on, building toward the main season. Mullet start to run the brackish margins. A quieter window before the summer.
• Early and high summer (May to August). The headline catfish months in the freshwater channels, with the big fish feeding hard in the warm water. In the heat, the catfish fishing leans on the early morning, the evening and the night. Mullet and bream are about the brackish mouths.
• Autumn (September into November). Catfish stay good into early autumn before the water cools. Sea bass come into form around the mouths and lagoons as the season turns. Often the best window for the saltwater side and a fine time for a mixed trip.
• Winter (December to February). The catfish slow as the water cools, but sea bass fishing around the mouths and lagoons is at its best, so this is the saltwater season on the delta. Mullet thin out in the cold. One legal point for the late-winter visitor: sea bass is catch-and-release only from 1 February to 31 March, so a February trip is a returning-fish trip, not a fish-for-the-table one.

Re-check whether any regional freshwater closed season applies on the channel you fish before you travel.

What you can keep (and the rule on the catfish)

Two different rule sets apply. In freshwater, the wels catfish is invasive in the Po and is often released or removed under local rules rather than treated as a routine release fish, so ask your guide. At the brackish mouths and sea, there is no licence but firm minimum sizes: sea bass at least 25 cm in the Mediterranean (the Adriatic counts as Mediterranean), gilthead bream at least 20 cm, with sizes for the others too.

This matters, and it differs between the freshwater fish and the sea fish, so it is worth being exact.

The freshwater fish. Wels catfish is not native to the Po; it was introduced and now grows to its European giants here. Because it is invasive, local rules often treat it as a fish to remove rather than return, and practice varies by stretch and operator. The freshwater fishing also runs on the regional rules (Veneto or Emilia-Romagna), which set the size and closed-season rules for the native river fish (carp, chub and the rest). So before you keep, or release, a freshwater fish, check the regional rule and ask your guide how the catfish is handled on the water you are fishing (source: FIPSAS; regional authorities; atlas roster, as of 5 June 2026).

The sea and brackish fish. Recreational sea fishing needs no licence, but it does carry national minimum sizes you must observe, and undersized fish go back. The headline figure: sea bass (spigola) minimum 25 cm in the Mediterranean under EU rules. The Po Delta opens onto the Adriatic, which counts as Mediterranean, so 25 cm is the figure here. (The 42 cm minimum you may read about is the north-east Atlantic limit and does not apply to the Adriatic.) Gilthead bream (orata) is at least 20 cm; mullet (cefalo) has no fixed EU Mediterranean minimum, so handle small ones with care. Two further rules apply to sea bass: it is catch-and-release only from 1 February to 31 March (a recovery period, so any bass caught then goes straight back), and from 10 January 2026 anyone fishing for it (and other regulated species) must register on the EU RecFishing app and log their catches. Sea bass, bream and mullet are good eating within the size limits and seasons (source: EU minimum conservation reference sizes, Regulation (EU) 2019/1241 Annex IX (Mediterranean); EU recreational-fishing reporting rules in force 10 January 2026, as of 5 June 2026).

Whatever you keep, check the size first, handle fish in wet hands, and clean and dry your kit between waters so you do not move invasive species or disease from one water to the next. On a wels catfish, which is invasive here, that last point matters more than usual.

Licences and the rules that matter

It depends on the water. Freshwater (the Po and its channels) needs an Italian inland fishing licence, which is issued by a region but valid across the whole country, plus, on most stretches, FIPSAS membership or the rights-holder's permit. A foreign visitor usually takes the short-term licence (Type D, around €13 for three months). Sea fishing (the brackish mouths and the open sea) needs no licence, but you must observe minimum sizes. Most catfish anglers let a guide handle the freshwater side.

The split-water point first. Italy divides fishing into freshwater and sea, and the delta sits across both:

• Freshwater (the Po and the channels). You need an Italian inland fishing licence, and on most stretches FIPSAS membership or the rights-holder's permit as well. The licence is issued by a region but is valid across the whole of Italy, so you do not need a separate one for the Veneto bank and the Emilia-Romagna bank. An Italian resident pays the annual regional concession tax (the "Type B" licence, roughly €20 to €35 depending on the region); a foreign visitor usually takes the short-term licence (the "Type D", around €13 for three months). FIPSAS, the Italian angling federation, holds the fishing rights on much of Italy's inland water, so on waters under its concession its membership card or a local day-permit is also required, and that is the common case on the Po. Take the inland licence, and the FIPSAS card or permit for the stretch you fish.
• Sea fishing (the brackish mouths and the open sea). No licence is required for recreational sea angling in Italy. You must, however, observe the national minimum sizes and any seasons, so the rule you carry to the mouth is the size limit, not a licence.

(Source: FIPSAS; Regione del Veneto and Regione Emilia-Romagna fishing-licence pages; turismofvg.it licences page; angloinfo.com on the Italian licence system; EU/Italian sea-fishing rules, as of 5 June 2026.)

The freshwater licence cost. The inland licence and the FIPSAS membership or permit are paid separately. The licence itself is a small regional concession tax: an Italian resident pays the annual "Type B" (about €34 in Veneto, about €22.72 in Emilia-Romagna, as of 5 June 2026); a foreign visitor takes the short-term "Type D" at around €13 for three months, valid across Italy. On top of that sits the FIPSAS card or the local day-permit for the stretch, which is set by the rights-holder and is the part that varies most, so confirm it with the regional authority or the local FIPSAS office before you buy, or simply book a guide who handles it. (Source: Regione del Veneto and Regione Emilia-Romagna licence pages; FIPSAS, as of 5 June 2026.)

How to get it

• The simplest route is to book a guide for the catfish. Most visiting anglers do, and the operator handles the regional licence and the FIPSAS permit, supplies the boat and the heavy tackle, and reads the delta for you. Confirm the licence is included when you book.
• Fishing freshwater independently? Take out the Italian inland licence (as a foreign visitor, the short-term Type D, valid across the country), and add FIPSAS membership or the rights-holder's permit for the stretch you fish. Carry both while you fish. You do not need a separate licence for each region, but you do need to check the local rule (sizes, closed seasons) for the regulation that governs your channel.
• Fishing only the sea and brackish mouths? You need no licence, but carry the minimum sizes in your head and a measure in your bag, and return undersized fish.

Sizes, seasons and the rules that matter

Freshwater size and closed-season rules for the native fish (carp, chub and the rest) are set regionally and differ between Veneto and Emilia-Romagna, so check the regional regulation. Wels catfish is invasive and handled under local rules (see what you can keep). Sea fishing carries EU minimum sizes: sea bass minimum 25 cm in the Mediterranean (the Adriatic counts as Mediterranean), gilthead bream 20 cm, with the mullet returned if small. Because the freshwater figures vary by region and stretch, the reliable source for those is the regional authority, the local FIPSAS office or your guide, not a single number on a page. (Source: regional authorities; FIPSAS; EU Regulation (EU) 2019/1241 Annex IX for the sea sizes, as of 5 June 2026.)

Where to fish

A guided boat is how the catfish are fished, running the freshwater channels from the delta towns. Sea-bass anglers fish the brackish mouths and lagoon edges from the shore and from a boat. The headline catfish water is the deep holes and snaggy channel margins; the sea fish hold where fresh meets salt at the mouths and in the valli.

These are the bases and what each is known for, from the atlas roster and the operators who run there (as of 5 June 2026).

What the water means for method

• The freshwater channels, the deep holes and the snaggy margins: catfish country. A heavy catfish rig on the bottom or under a float, almost always from a guided boat.
• The brackish mouths and the channels where fresh meets salt: sea-bass water. Light lures or a running-leger on bait from the shore or a boat.
• The lagoons (the valli) and the margins: where mullet shoal and bream feed over the mixed ground. Light bottom bait or fine float tactics; scale down the inshore bait rig.

Bank vs boat, and the time of day

The catfish fishing is a boat game, so for the headline fish you book a guided boat on the channels. Sea bass come from the shore at the mouths and from a boat, with the autumn and winter the prime run. Mullet and bream you can fish from the bank in the lagoons. In summer heat, fish dawn, dusk and the night for the cats.

Plain version: if you want a giant catfish, book a guided boat, because that is how it is done here, and fish the warm months with the early morning, the evening and the night out-fishing the bright middle of the day. If you have come for the sea bass, the brackish mouths fish well from the shore, best in autumn and winter and in low light. Mullet and bream are a genuine bank fish in the lagoons on light tackle.

This table is the core decision the trip turns on. It lives on the cheat sheet too. Read it as: pick your fish, pick where you are and when, and it gives you the rig.

The boat: guided trips and operators

The catfish fishing is guided. Local catfish guides run the freshwater channels and supply the boat, the heavy tackle and the licence, which is the simplest way onto the cats and the way to handle the regional rules. Day rates vary and many sell packages, so the links below are the ways to book. Sea-bass anglers fish the mouths from shore or hire a boat.

A guided boat is what opens up the big catfish and lets the operator handle the regional licence and the invasive-catfish question, which is worth a great deal on a first visit. Numerous local catfish guides operate the Po. Book directly, and get a current quote from the operator rather than a number we cannot stand behind.

Operators to book

Numerous local catfish guides operate the Po; from the atlas roster and the operators' own sites, as of 5 June 2026:

• Local Po Delta catfish guides run guided boats on the river and channels, supplying the boat, heavy tackle and the freshwater licence, and selling day trips or packages. Bookable catfish and predator guides for the Po and its delta are listed on guide marketplaces such as FishingBooker (its Italy guide lists the Po catfish operators).
• When you book, confirm: the day rate or package price, whether the regional freshwater licence and FIPSAS permit are included, the boat and tackle supplied, and how the catfish is handled on the stretch (released or removed under the local rule).

For the sea bass, bream and mullet at the mouths, shore fishing needs no licence and no guide; for a boat session, small-boat hire and inshore charters operate from the delta and lagoon towns, so ask locally at Porto Tolle, Goro or Comacchio.

Where to stay (and book the trip)

The simplest plan for the catfish is a guided package that includes the boat and the licence, based in the delta towns. For an independent trip, there is accommodation in Porto Tolle, Taglio di Po, Goro and Comacchio, and around the Po Delta Park, so you can stay near the channels for the cats or near the mouths and lagoons for the sea fishing.

Stay near the fishing

• Porto Tolle and the Rovigo delta (Veneto) – central for the channel catfish and the Pila mouth, with hotels, agriturismi and B&Bs around the Po Delta Park.
• Taglio di Po and Adria (Veneto) – upstream bases on the river and channels, handy for a freshwater catfish trip.
• Goro and Comacchio (Emilia-Romagna) – by the southern lagoons and mouths, the bases for the brackish and sea fishing, with Comacchio a tourist town on its lagoon.
• Guided packages – operators running the catfish often arrange or recommend accommodation with the trip; ask when you book.

If you are fishing freshwater independently rather than on a package, base yourself near the channels you mean to fish (Porto Tolle, Taglio di Po or Adria in Veneto; Goro or Comacchio in Emilia-Romagna). Your inland licence is valid on either side, so what you are matching is the accommodation to the water, and checking the local sizes, closed seasons and permit for that stretch.

The methods, and the rigs to build them

Three methods cover the delta. The catfish rig is the heavy running leger and float paternoster for the big cats in the channels. The inshore bait rig presents bait on or near the bottom for sea bass and bream at the mouths. A light lure (a soft plastic on the drop shot, or a small spinning lure) takes sea bass over the brackish edges. Each links to its build page.

Map of fish, where and when, to a rig. The build instructions and the knots live on the rig pages, so I link rather than repeat them.

• Wels catfish, from a guided boat in the channels, warm months → catfish rig. A heavy running leger laying a bait on the bottom, or a float paternoster holding it off the bottom, both on a strong trace of heavy mono, coated braid or wire. The strong trace is the one thing you never skimp on, because a big cat tests every link. It ties on an FG knot for the braid-to-leader join and a snell knot for the strong single hook.
• Sea bass, bream and mullet on bait at the mouth → inshore bait rig. A running-sinker (ledger) that lets a fish run with the bait before it feels the weight, or a light paternoster that stands the bait off the bottom, for the brackish and sea fish. Scale it down for shy mullet. The bait hooks are snelled and the swivel is a Palomar.
• Sea bass on a light lure over the brackish edges → drop shot (or a small spinning lure on the same outfit). A soft plastic hovering off the bottom on a dropper, worked slowly, or a small hard lure cast and retrieved over the mouths. The flexible light-lure route to a bass.

Build your kit (the kit builder and the shopping list)

Pick your fish and whether you are on the bank or in a boat, and the kit builder trims the shopping list and the rigs to exactly what you need. A guided catfish trip needs almost nothing from you (the operator supplies it); a self-guided sea-bass trip wants one light saltwater outfit and a small terminal box. The full list is below, grouped, with no brands and no prices.

If you are booking a guided catfish trip, the operator supplies the rods, reels, traces, hooks, bait and the boat. Bring: comfortable clothing for long days, strong sun protection (a hat, sunglasses, high-factor cream), wet-weather gear, sturdy footwear, a camera or phone for the photo, and any personal medication. Confirm with the operator what, if anything, you should bring.

That is the whole list. A guided catfish trip needs only the personal items; a self-guided sea-bass trip wants the light saltwater outfit and a small terminal box. Buy generic sizes and types; you do not need a named brand to catch a fish.

A trip checklist

Before you go: decide your fish and whether you want a guided boat for the cats. Book the guide (and confirm the freshwater licence is included), or buy the right regional licence and permit yourself. For the sea fishing, carry the minimum sizes. Pack the kit for your trip type. Then print the cheat sheet and take it with you.

Do this in order:

1. Decide the fish and the format. A giant catfish means a guided boat on the channels (best May to September). Sea bass means the brackish mouths, best autumn into winter, fishable from the shore yourself. The "what's on" strip above shows the strong months.
2. Book the guide, or sort the licence. For the catfish, booking a guide is the simplest route, and they supply the boat, the heavy tackle and the regional freshwater licence and FIPSAS permit. Fishing freshwater independently, take out the Italian inland licence (a foreign visitor uses the short-term Type D, valid across the country) and the FIPSAS membership or permit for your stretch before you travel. For sea fishing, you need no licence.
3. Note the rules for your fish. Freshwater: the regional sizes and closed seasons, and how the invasive catfish is handled on your stretch (ask your guide). Sea: the minimum sizes, sea bass at least 25 cm in the Adriatic and bream at least 20 cm, and a measure in your bag.
4. Pack the kit for your trip type. Guided catfish: clothing, sun protection, camera, the operator supplies the rest. Self-guided sea bass: the light saltwater outfit (bait and lures) and a small terminal box. The shopping list above (trimmed by the kit builder) is your packing list.
5. Clean and dry your kit before and after, so you do not move invasive species between waters. The catfish is invasive here, so this matters.
6. Print the cheat sheet and fold it into the box. Get the printable cheat sheet

Common mistakes

The big ones: not knowing whether you are on freshwater (licence and permit) or sea (no licence, but minimum sizes), buying the wrong region's freshwater licence, expecting a giant catfish from the bank without a boat, fishing the bright middle of a hot summer day, and ignoring the sea-bass minimum size. None is hard to avoid once you know.

• Not knowing which water you are on. The delta is split fresh and salt. The channels are freshwater and need a regional licence and a FIPSAS permit; the brackish mouths and the sea need no licence but carry minimum sizes. Work out which you are fishing before you cast.
• Assuming you need a separate licence for each region. You do not: the Italian inland licence is issued by a region but valid across the country, so one covers both the Veneto and the Emilia-Romagna banks of the delta. A foreign visitor takes the short-term Type D. What does change by region is the freshwater sizes, closed seasons and the FIPSAS permit, so check the local rule for the stretch you fish, or let your guide handle it.
• Expecting a giant catfish from the bank. The big cats are a boat game here, fished in the channels with a guide. Book a guided boat for the headline fish. The bank is the place for sea bass at the mouths and mullet in the lagoons.
• Fishing the middle of a hot summer day. In high summer the heat slows the catfish fishing in the middle of the day. Fish dawn, dusk and the night, and rest in between.
• Ignoring the sea-bass minimum size. Sea fishing needs no licence, but the minimum size applies, and undersized fish go back. Sea bass is at least 25 cm in the Adriatic (the Mediterranean figure, not the 42 cm Atlantic one); carry a measure.
• Treating the catfish as a routine release fish. The wels is invasive in the Po and local rules often have it removed rather than returned, and practice varies. Ask your guide how it is handled on your stretch rather than assuming.
• Moving kit between waters dirty. The catfish is invasive because it spread. Clean and dry your gear between waters.

Frequently asked questions

The questions travelling anglers ask most about the Po Delta: what is here, the split licence, whether the two regions need different licences, the size of the catfish, the seasons, bank versus boat, the rule on the catfish, the sea-bass minimum size, the rigs, and whether to book a guide.