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💧 Freshwater Critically Endangered 🌡️ Tropical

Blackspot allotoca

Allotoca maculata Smith & Miller, 1980
Max Length
6.5 cm
Max Weight
-
Lifespan
-
Trophic Level
2.2
Depth
-
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Found in very clear water with muddy or boggy bottoms . Migratory behaviour is undetermined . Species used in research .

Scientific Name
Allotoca maculata
Authority
Smith & Miller, 1980
Habitat
Freshwater
Climate
Tropical
IUCN Status
CR
Max Length
6.5 cm
Trophic Level
2.2
Vulnerability
10.00/100
Water Temp
22–26 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal soft rays (total): 13 - 14; Anal soft rays: 11 - 13. Diagnosis: A small species with dorsal and anal fins set far back on body, but less posterior than in Allotoca dugesi. Predorsal length 64-68%. Dorsal origin slightly ahead of anal origin. Dorsal rays usually 13 or 14. Anal rays usually 11-13. Lateral scales 28-32. Mandibular pores absent. Adult fins dimorphic, longer in males which have dorsal and anal fins rounded and elevated. Deep body and compressed. The coloration is distinctive, fins mostly clear, one or more irregular dark spots on caudal peduncle, females with 3-6 lateral blotches of iridescent blue, males with a lateral series of fine dark spots. Diploid chromosome number 48, no metacentrics .

🌀 Behaviour

Behavioural data for Blackspot 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 - 7.7; dH range: 5 - 20. Tropical; 22°C - 26°C ; 23°N - 22°N North America: Jalisco, Mexico.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Trophic Level
2.2±0.1

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
6.5cm
Dorsal Rays
14
Anal Rays
12

🌡️ Water Parameters & Tolerance

Temperature Range
22–26°C
pH Range
7–7.7
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Critically Endangered
Assessment Date
2018

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
2.2
Omnivore / Planktivore
Climate Zone
Tropical
Described By
Smith & Miller, 1980

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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