Largemouth black bass
📖 Overview
Inhabit lakes, ponds, swamps, and backwaters and pools of creeks, and small to large rivers . Usually found over mud or sand and common in impoundments . They prefer quiet, clear water and over-grown banks. Adults feed on fishes, crayfish and frogs; young feed on crustaceans, insects and small fishes. Sometimes cannibalistic. They don't feed during spawning; as well as when the water temperature is below 5°C and above 37°C . Builds nest at 25 mm-203 mm deep . An introduced species in Europe reported to avoid fast-flowing waters and to occur in estuaries with a salinity up to 13 ppt . Popular game fish in North America. Preyed upon by herons, bitterns, and kingfishers . Excellent food fish .
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 10; Dorsal soft rays (total): 11 - 14; Anal spines: 3; Anal soft rays: 10 - 12; Vertebrae: 30 - 32. : fusiform / normal; Cross section: oval.
🌀 Behaviour
Behavioural data for Largemouth black bass is currently being reviewed.
🦐 Diet
🥚 Reproduction
The male which becomes aggressive and territorial builds the nest on muddy bottoms of shallow water. A female may spawn with several males on different nests. The male guards and fans the eggs for about 29 days . Spawning takes place spring to summer or when temperature reaches 15°C. Adults mate between the age of 5-12 years . Also Ref, 88808, 101194.
🌍 Habitat & Distribution
Freshwater; benthopelagic; pH range: 7.0 - 7.5; dH range: 10 - ?; depth range 0 - 6 m . Subtropical; 10°C - 32°C ; 46°N - 24°N, 125°W - 65°W North America: St.
🌿 Ecology
fishes, crayfish and frogs; young feed on crustaceans, insects and small fishes
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🚨 Invasive Species Impact
- aggressive predation on native small fish
- disruption of amphibian populations
- competitive displacement of native predators
- creates sport fishery revenue
- damages native subsistence fisheries
Targeted removal in sensitive waters; regulatory restrictions on further introductions.
Established globally; management balances sport fishery value against ecological impact.
References: Compiled from IUCN Global Invasive Species Database, USGS Nonindigenous Aquatic Species database, and CABI Invasive Species Compendium.
🎣 Angling Guide
- medium-heavy 6-7ft baitcasting rod
- fluorocarbon leader
- baitcaster reel
- weedy shallows
- submerged timber
- rocky drop-offs
- docks and boat lifts
Use barbless hooks, minimise air exposure, and revive fish head-first in current before release.
⚠️ Bag limits vary; check local slot-size regulations.
📊 Population Dynamics
| Year | Region | Index | Notes |
|---|---|---|---|
| - | - | - |
🏆 World Records
| Record Type | Value | Angler | Location | Date | Line Class |
|---|---|---|---|---|---|
| Weight | 10.09 kg | George Perry / Manabu Kurita (tied) | Georgia USA / Lake Biwa Japan | 02 Jun 1932 | ALL |
Source: IGFA All-Tackle World Records database
🌐 Names & Taxonomy
| Language | Common Names |
|---|---|
| 🇬🇧English | American Black Bass · Bass · Black Bass · Black-bass · Florida Bass · Florida Largemouth Bass · Florida largemouth black bass · Green Bass · Green Trout · Large-mouth Bass · Large-mouthed Bass · Largemouth · Largemouth Bass · Largemouth Bass (Black Bass) · Largemouth Black Bass · Largemouth Blackbass · Northern Largemouth Bass · Slough Bass |
| 🌍AFR | Grootbek-baars · Swartbaars |
| 🏳️Catalan | Perca americana |
| 🌍CES | okounek floridský · okounek pstruhový |
| 🌍CYM | Swilod Cegfawr · swilyn cegfawr |
| 🇩🇰Danish | Stormundet black bass · Stormundet ørredaborre · Ørredaborre |
| 🇩🇪German | Amerikanischer schwarzbarsch · Barschforelle · Forellenbarsch · Großmäuliger schwarzbarsch · Kleinmauliger schwarzbarsch |
| 🌍EST | suursuu-forellahven |
| 🌍FAS | Bas Dehanbozorg · Khorshid Mahi Baleh Kuchak |
| 🇫🇮Finnish | Isobassi |
| 🇫🇷French | Achigan · Achigan à grande bouche, Black-bass à grande bouche, Perche d'Amérique, Perche noire, Perche truite, Perche truitée · Black-bass de Floride · Black-bass à grande bouche · Black-bass à grande bouche de Floride · Perche d'Amérique · Perche de Floride · Perche noire · Perche noire de Floride · Perche truite · Perche truitée de Floride · achigan à grande bouche · black bass à grande bouche · blackbass à grande bouche |
| 🇭🇺Hungarian | Fekete sügér · pisztrángsügér |
| 🇮🇹Italian | Persico trota · Persico trota della Florida |
| 🇯🇵Japanese | フロリダバス |
| 🇰🇷Korean | 베스 · 큰입배스 |
| 🌍LAV | Forelasaris |
| 🇳🇱Dutch | Forelbaars · Forellenbaars · Grootbekforelbaars · Zwarte baars · grootbekbaars |
| 🌍NOB | lakseabbor · stormunnet lakseabbor |
| 🇳🇴Norwegian | Lakseabbor |
| 🇵🇱Polish | Bass wielkgebowy · Bass wielkogebowy |
| 🇵🇹Portuguese | Achiga · Achiqã · Boca grande |
| 🌍RON | Biban cu gura mare |
| 🇷🇺Russian | Bol'sherotyi chernyi okun' · Bolsherotnyi amerikanskii tscherny okun · Флоридский большеротый окунь · большеротый американский окунь |
| 🌍SLK | Ostracka lososovitá |
| 🇪🇸Spanish | Black-bass · Huro · Lobina de Florida · Perca americana · Perca atruchada · lobina negra |
| 🇸🇪Swedish | Öringsaborre · öringabborre |
| 🌍VEN | Ramafelia |
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 529 records indexed .
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