Suckermouth Catfish in Florida: Sailfin Pleco Spots & Rules

Clamped to a bridge piling in the Hillsborough River is a fish that belongs in a fish tank: a dark, armor-plated catfish with a suction-disc mouth, holding station in the current under a tall, many-rayed sail of a dorsal fin. The suckermouth catfish — the sailfin pleco, Pterygoplichthys multiradiatus — is the aquarium cleaner’s giant wild cousin, established in rivers and canals across Florida, rasping algae off every hard surface in the state.

One honest complication belongs up front: Florida’s sailfins are not a pure species. The established population is a hybrid swarm of P. multiradiatus and P. disjunctivus, filed under the multiradiatus name — which is why Florida fish show patterns from discrete spots to vermiculated mazes. FWC’s exotic fish identifier illustrates it as “Sailfin Catfish (Pterygoplichthys multiradiatus) — one of three similar suckermouth catfishes in Florida.” All of them dig burrows into canal and river banks, undermine edges, and show up in cast nets by the dozen.

FWC’s posture is the standard exotic one: no limits of any kind, harvest all you catch, and never release them. Plecos sit on no restricted list, so the live-possession bans that govern the tilapias do not apply here — what governs is the framework, including the bait-transport ban. This guide covers the cast-net and bait fishing, the burrow banks, and the rules as written.

Where to Catch Them

Sailfin plecos are among the most widespread exotics in Florida’s fresh water — rivers, canals, and lake edges statewide, anywhere hard surfaces and erodible banks meet warm water.

Waters and habitat

• Burrow banks: the signature sign — canal and river banks riddled with nesting burrows at and below the waterline, whole colonies honeycombing an eroding edge. Fish the water in front of burrow banks at dawn and dusk.
• Bridge pilings, rip-rap, and seawalls: plecos clamp and graze on hard structure; a slow look down a seawall at midday shows them stacked fin to fin.
• River runs — Hillsborough, St. Johns, Kissimmee: the big river systems carry heavy populations, especially around springs, docks, and submerged timber.
• Spring runs: warm, constant water concentrates them in winter — some of the densest pleco aggregations in Florida are in spring runs in the cool months.

Reading the bank

Most anglers meet this fish by accident — a cast net full of armor, a strange scrape on a bait. Anglers who target them read banks the way bass fishermen read grass lines: burrowed, undercut, pleco-dug edges are the map. It is the only fish in this wave whose habitat improvement project is also the environmental complaint — the burrows erode banks, one more reason FWC’s posture is removal.

Access without a boat

Excellent. Seawalls, canal banks, bridge crossings, and spring-run parks are the fishery — plecos hold tight to the very structure you are standing on.

When to Catch Them

Year-round, with summer nights and the warm months best. Plecos feed and move most after dark; in winter they stack into spring runs and deep holes, where the fishing — and the removal value — is highest. There is no closed season.

How to Catch Them

Tackle. Two fisheries, two toolkits: a cast net where FWC’s Methods rules allow one is the harvest standard, and for hook-and-line, a medium spinning outfit with bottom rigs and tough hands — an armored fish is hard on gear and skin alike.

Baits and lures. Plecos are algae and detritus raspers; dedicated bait anglers take them on bread, dough, worms, and algae-mimicking baits fished hard on the bottom near structure. Lures are not a method — this is not a chasing fish. Most hook-and-line catches come from patient bottom baits in front of burrow banks at dusk.

Technique. With a cast net, work the seawall shadows, spring-run edges, and burrow-bank fronts, and let the net sink fully — plecos hug bottom. Handle every fish with a grip behind the head and total respect for the armor: the plates and fin spines are sharp, the skin is sandpaper, and a flopping pleco in a net is a tangle with a temper. Like the bowfin in the same rivers, it is a fish that commands respect in the hand — armor instead of teeth, same lesson.

Florida Regulations

Suckermouth catfish is a nonnative nongame fish under FWC’s standard exotic posture: unlimited harvest, never release, and one transport rule to know.

Waters	Daily bag	Size rule (total length)
Statewide (all waters)	No limit — keep every one you catch	No minimum size
Fish Management Areas	No limit	No minimum size; intentional release is prohibited on Fish Management Areas

Harvest: unlimited. No bag limit, no possession limit, no size limit, and no closed season. FWC’s exotic fish identifier illustrates the species — unstarred — and the regulations booklet’s ID chart states the general posture: nonnative fish “most should be harvested and never released.” For plecos, removal is the point twice over: every fish out is one less bank-burrower.

Release and transport. The never-release posture rests on FWC’s exotic guidance plus Florida’s ban on introducing any nonnative fish into state waters, and on Fish Management Areas intentional release is prohibited outright. The one transport line that touches plecos by name-class: no live nonnative fish may be transported to or between waters for use as bait — a pleco cannot legally ride alive to another lake as bait, whatever its virtues as a tough bait might be in theory.

No species-specific live ban. Armored catfishes appear on no Conditional or Prohibited list under Florida Rule 68-5 in any FWC source, and the identifier leaves the species unstarred — so unlike the tilapias, there is no pleco-specific live-possession prohibition to report. The framework above is the complete rulebook. Gear follows the general nongame provisions — rod and reel anywhere; cast nets where the Methods rules allow them (South and Northeast regions, Citrus County, Southwest Region), which is the standard pleco gear squarely inside the framework; bow, gig, and spear under nongame rules. A Florida freshwater fishing license is required for nongame species.

Regulations verified against FWC, October 2026 — always confirm current rules at myfwc.com before you fish.

Quick Facts

• Scientific name: Pterygoplichthys multiradiatus (Florida’s fish are a multiradiatus × disjunctivus hybrid swarm)
• Also known as: sailfin pleco, suckermouth catfish, pleco, sailfin catfish (FWC’s identifier name)
• Typical Florida size: 12 to 20 inches — the aquarium “algae eater” at river scale
• Table quality: poor for most anglers — armored and bony; the value of the catch is removal
• Fight quality: less a fight than a hauling — pure weight and suction, stuck to the bottom

Related Species

Other established exotics in Florida waters include Brown Hoplo, Asian Swamp Eel, Bullseye Snakehead and Walking Catfish.

See the exact hooks, baits and rigs for Suckermouth Catfish in the Tackle & Bait Picker.