Fish, sunfish family

Largemouth bass

Micropterus salmoidesnon-native speciesnegative impact on ecosystems
Origin
Non-native species
Fishing
all year
Largemouth bass (Micropterus salmoides)
Photo: USFWS Mountain Prairie, Public domain, Wikimedia Commons

About the species Largemouth bass

How to recognise it

An olive-green body with a dark lengthwise band on the side. The mouth is large and reaches past the eye; the dorsal fin is divided into a spiny and a soft part.

Where it lives

Warm overgrown ponds and reservoirs. It originates in North America.

What it feeds on

Fish, crayfish, frogs and larger insects.

The regulation classes it among species with a demonstrably negative impact on natural ecosystems. Never release it into other waters.

Classification under the decree

Decree of the Ministry of the Environment of the SR no. 381/2018 Coll. on fisheries.

Classification

A species with a demonstrably negative impact on natural ecosystems (Section 13, paragraph 3 of the decree).

Closed season, minimum size and daily limit

What the Fisheries Act says about largemouth bass. For guidance only; check it in the fishing regulations of the district.

Fishing all year round

§ 10 of the Decree

no closed season

Under the decree the species may be caught from 1 January to 31 December (Section 10, paragraph 4). This does not mean it may be caught in every water at any time: the closed season, the permit and the fishing rules of the district can restrict fishing.

Summary of Act no. 216/2018 Coll. and Decree no. 381/2018 Coll. (as of 6 Nov 2026). It may be out of date or contain an error, and exceptions apply on some waters. The permit and the fishing regulations of the district are binding. The fishing law, rule by rule.

Where it was recorded

Fishing districts around which a record of this species exists (GBIF).

We do not yet track where this species occurs in individual fishing districts. So far we have records from the GBIF database only for species with numerical water-temperature data.

Catches of Largemouth bass

Approved catches by anglers on this portal.

Nobody has logged a catch of this species yet. Be the first; once approved it will appear here and on the leaderboard.

Similar species

Photo credits

Minimum sizes, protection periods and permitted fishing methods are set by the fishing regulations and the conditions of the specific fishing district. Check them before you fish.