Eigenmannia Nigra
📖 Overview
Eigenmannia Nigra (Eigenmannia nigra) is a ray-finned fish of the family Sternopygidae. It inhabits freshwater waters. This species can reach a maximum total length of 47.6 cm. With a trophic level of 3.1, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal soft rays: 231 - 247. Peculiar black phase coloration and large size. No horizontal dark stripes on body; anal fin either completely black or with dark margin; a marked dark humeral blotch; dorsal head profile strongly convex; snout length less than two eye diameters; interocular distance 30-40% in head length; gape almost the length of the snout; pectoral fin 69-75% in head length.
🌀 Behaviour
Behavioural data for Eigenmannia Nigra is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Freshwater; benthopelagic. Tropical South America: Rio Negro basin and Rio Casiquiare in Venezuela and also from the Colombian Amazonia (Leticia) and the Rupununi River in Guyana.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🔍 Similar Species
👥 Community & Contribute
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