Pseudanos Varii
📖 Overview
Adults occur in blackwater rivers and seasonally flooded forest on shores of river or oxbow lakes . Distinct pairs breed on densely grown weedy places .
🔬 Taxonomy
🐟 Physical Description
Dorsal soft rays (total): 11 - 13; Vertebrae: 41 - 43. Distinguished from all other species of Pseudanos by having the following characters: three branchiostegal rays (vs. four in P. gracilis and most specimens of P. winterbottomi); dark transversal bars on dorsum absent (vs. present in P. trimaculatus); dark spots present on the center of each body scale, forming conspicuous, straight dark lines (vs. dark spots absent in P. gracilis; and in some specimens of P. trimaculatus), four midlateral dark blotches on body (vs. usually two, sometimes three or four in P. trimaculatus, or body lacking midlateral blotches and presenting instead a broad midlateral stripe in P. winterbottomi); angle of the dorsal and ventralmost radii of body scales between 40° and 90° (vs. angle between 110° and 180° in P. gracilis and P. trimaculatus); and cranial fontanel opened along its entire length (vs. cranial fontanel partially closed in P. trimaculatus) .: fusiform / normal.
🌀 Behaviour
Behavioural data for Pseudanos Varii is currently being reviewed.
🦐 Diet
Diet information for Pseudanos Varii is currently being compiled.
🥚 Reproduction
Distinct pairs breed on densely grown weedy places .
🌍 Habitat & Distribution
Freshwater; benthopelagic. Tropical South America: Rio Negro basin in Brazil, Río Síapa and Río Atabapo in Venezuela.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🔍 Similar Species
👥 Community & Contribute
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