Nematocharax Costai
📖 Overview
Occurs in sandy bottom fast running water stream, with about 7 m width, 1 m depth and pale brown and turbid water. Found under marginal vegetation .
🔬 Taxonomy
🐟 Physical Description
Vertebrae: 33. Distinguished by having the following unique combination of characters: dorsal, anal and pelvic fins with elongated branched rays; two rows of premaxillary teeth in adults, and an almost complete row of teeth along the free ventral maxillary border. Differs from its unique congener, Nematocharax venustus, by having the following characters: absence of hooks or spinules on dorsal and pelvic-fins (vs. presence); five anal-fin rays with spinules (vs. more than seven rays); presence of a long dark pink horizontal mark on the caudal peduncle (vs. absence); five supraneurals (vs. four or fewer); pelvic-fin filament yellow (vs. pale rosy) . : short and / or deep.
🌀 Behaviour
Behavioural data for Nematocharax Costai is currently being reviewed.
🦐 Diet
Diet information for Nematocharax Costai is currently being compiled.
🥚 Reproduction
Reproduction data for Nematocharax Costai is currently being compiled.
🌍 Habitat & Distribution
Freshwater; benthopelagic. Tropical South America: Cambiriba Stream, Balneário Guaíra, middle Contas River basin in northeastern Brazil.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
📊 Population Risk & Fisheries
🔍 Similar Species
👥 Community & Contribute
No observations yet - be the first to log one!
View all observations for Nematocharax Costai ↗Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.
Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.