New 🐟 Mercury Safety Guide & Omega-3 Rankings Updated for 2026. View Omega-3 Rankings →

💧 Freshwater 🌡️ Tropical

Geophagus Diamantinensis

Geophagus diamantinensis Mattos, Costa & Santos, 2015
Max Length
7.4 cm
Max Weight
-
Lifespan
-
Trophic Level
2.6
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
11.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Stomach content revealed that G. diamantinensis is insectivorous and feeds mainly on autochthonous resources; the main stomach contents included the following insect orders: Diptera, Ephemeroptera, Coleoptera, Trichoptera and Odonata; in addition, a residual content of vegetal material was also found .

Scientific Name
Geophagus diamantinensis
Authority
Mattos, Costa & Santos, 2015
Habitat
Freshwater
Climate
Tropical
Body Shape
Fusiform / normal
Max Length
7.4 cm
Trophic Level
2.6
Resilience
High
Vulnerability
11.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 14; Dorsal soft rays (total): 10 - 12; Anal spines: 3; Anal soft rays: 7 - 8; Vertebrae: 27 - 28. Diagnosis: Geophagus diamantinensis is distinguished from all other species of the Geophagus brasiliensis species group by having the urohyal bone with a gentle anterior constriction (vs. strong constriction); presence of a small dark brow mark just posterior to pectoral fin (vs. absence); presence of a horizontal dark brown band on snout (vs. absence); and head more slender, head depth 77-86 % HL (vs. 87-122); G. diamantinensis is distinguished from G. itapicuruensis by having XIV spines on the dorsal-fin (vs. XIII), and from G. obscurus by having subterminal mouth (vs. terminal) .: fusiform / normal; Cross section: compressed.

🌀 Behaviour

Behavioural data for Geophagus Diamantinensis is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 👄 Mouth Brooder 🛡️ Egg Guarder
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical South America: currently known only from the upper section of the Paraguaçu river basin, Chapada Diamantina, north-eastern Brazil (Ref.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
2.6±0.1
Food Items

autochthonous resources; the main stomach contents included the following insect orders: Diptera, Ep

📐 Morphometrics

Length–Weight Relationship: W = 0.02042 × L3.02 (TL)
Max TL
7.4cm
Dorsal Spines
14
Dorsal Rays
11
Anal Spines
3
Anal Rays
8
Vertebrae
28

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
11.00/100
Low vulnerability
Trophic Level
2.6
Omnivore / Planktivore
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Mattos, Costa & Santos, 2015

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Geophagus Diamantinensis ↗
Suggest an Edit

Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.

Link to a scientific paper, FishBase, or other authoritative source
Report an Issue

Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.