Black fin moon tetra

📖 Overview

This species was caught close to the bank of the river, at a depth of about 1 meter over sand and mud; banks covered with dense, undisturbed riparian vegetation consisting of large numbers of entangling lianas covering large trees which also bear many epiphytic orchids . Water temperature in the shallows where most specimens were collected was between 21.0-22.5°C and pH 7.6; water very turbid and current moderately rapid .

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 9 - 10; Anal spines: 0; Anal soft rays: 18 - 20; Vertebrae: 33 - 35. Diagnosis: This species is distinguished from congeners by the possession of 21-24 scales in the longitudinal series vs. 28-42 scales, and from Brachypetersius altus by the possession of a short, abridged lateral line of 6 or 7 pored scales vs. a complete lateral line of 20-28 pored scales . Unique among related taxa in displaying marked sexual dichromatism, and dimorphism of the anal-fin skeleton; with medially expanded first anal-fin pterygiophores, markedly enlarged branched anal-ray segments, and strongly convex anal-fin profiles characterizing males; they also display a distinctive black blotch extending from just above midline behind the dorsal fin and passing ventrally over the anal fin . : fusiform / normal.

🌀 Behaviour

Behavioural data for Black fin moon tetra is currently being reviewed.

🦐 Diet

🥚 Reproduction

🌍 Habitat & Distribution

Freshwater; pelagic; pH range: 7.6 - 7.6. Tropical; 21°C - 23°C known from Lékoumou River, a small tributary of the Louessé River in the Kouilou-Niari basin (Ref.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

📊 Population Risk & Fisheries

🐠 Related Species

🔍 Similar Species

👥 Community & Contribute