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💧 Freshwater 🌡️ Temperate

Percichthys Laevis

Percichthys laevis Jenyns, 1840
Max Length
22 cm
Max Weight
-
Lifespan
-
Trophic Level
3.6
Depth
-
Climate
Temperate
Resilience
Medium
Vulnerability
38.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Percichthys Laevis (Percichthys laevis), first described by Jenyns, 1840 is a medium-sized fish in the family Percichthyidae (order Centrarchiformes). Adults typically reach 22.00 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Temperate waters. It feeds on a mix of small fish and invertebrates as a mid-level predator.

Scientific Name
Percichthys laevis
Authority
Jenyns, 1840
Habitat
Freshwater
Climate
Temperate
Max Length
22 cm
Trophic Level
3.6
Resilience
Medium
Vulnerability
38.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Anal soft rays: 8 - 11. Differs from its congeners by the dentigerous arm of premaxilla about 1.6-1.9 the height of ascending process (vs. 1.5 or more than 2 times that height), and the following combination of characters: quadrate-mandibular articulation at posterior half of orbit; mouth hypognathous; posterior border of maxilla at about anterior border of pupil, between the posterior border of lachrymal and anterior half of the infraorbital 2; hyoid artery piercing dorsal hypohyal; 3 predorsal bones; one supernumerary spine on first dorsal pterygiophore; 8 trisegmented pterygiophores in dorsal fin; 3rd or 4th dorsal fin spine the longest; anal fin origin slightly behind the origin of rayed portion of dorsal fin; pectoral and pelvic fins of similar length, being 60-75% HL and 70-110% body depth; 15-16 pectoral fin rays; 8-11 anal fin rays; 45-49 caudal fin rays .

🌀 Behaviour

Behavioural data for Percichthys Laevis is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic. Temperate South America: Santa Cruz-Chico systems in Argentina.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.6±0.1

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
22cm
Anal Rays
10

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
38.00/100
Moderate vulnerability
Trophic Level
3.6
Predator
Climate Zone
Temperate
Described By
Jenyns, 1840

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