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💧 Freshwater Extinct in the Wild 🌡️ Tropical

Banded allotoca

Allotoca goslinei Smith & Miller, 1987
Max Length
6 cm
Max Weight
-
Lifespan
-
Trophic Level
2.1
Depth
0–1 m
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Adults occur mainly in shallow water (15-26 cm) underneath floating plants (water hyacinth, filamentous algae and a nasturtium-like plant) along the gradually sloping north side of the pool. Collected from quiet pool of clear to murky water, with substrate of sand, silt, rocks and boulders . Migratory behaviour is undetermined .

Scientific Name
Allotoca goslinei
Authority
Smith & Miller, 1987
Habitat
Freshwater
Climate
Tropical
IUCN Status
EW
Max Length
6 cm
Depth Range
0–1 m
Trophic Level
2.1
Vulnerability
10.00/100
Water Temp
24–28 °C
Salinity
0–0.5 ppt

🐟 Physical Description

A small, cone-toothed goodeid characterized with the following: divided preorbital and preopercular sensory canals and trophotaeniae in an elongated rosette; presence of pores 2b-4a in the supraorbital canal system; 12-18 narrow vertical bars along midside; 35-38 vertebrae; compared with A. dugesi more anal-fin rays, modally 14 (vs. 11 or 12 and more diploid chromosomes, 2N = 48 telocentrics and subtelocentrics (vs. 2N = 26 including 22 metacentrics); compared with A. maculata, more dorsal-fin rays, modally 16 (vs. 13 or 14) and in having mandibular pores 4 (vs. 0); compared with A. diazi, A. catarinae and A. meeki, it has fewer preopercular pores modally 8 (vs. 10 or 11), fewer preorbital pores modally 4 (vs. 5), absence of metacentric chromosomes, and a dark band on the male caudal fin ., more dorsal

🌀 Behaviour

Behavioural data for Banded allotoca is currently being reviewed.

🦐 Diet

algae
aquatic plants
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; demersal; pH range: 7.0 - 7.6; dH range: 5 - 20; depth range 0 - 1 m . Tropical; 24°C - 28°C Central America: Ameca River basin, Jalisco, Mexico.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Trophic Level
2.1±0.1

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
6cm

🌡️ Water Parameters & Tolerance

Temperature Range
24–28°C
pH Range
7–7.6
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Extinct in Wild
Assessment Date
2018

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
2.1
Omnivore / Planktivore
Climate Zone
Tropical
Described By
Smith & Miller, 1987

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