Matilebias Periodicus
📖 Overview
Matilebias Periodicus (Matilebias periodicus), first described by Costa, 1999 is a small fish. Adults typically reach 5.00 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Subtropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Vulnerable.
🔬 Taxonomy
🐟 Physical Description
Dorsal soft rays (total): 16 - 26; Anal soft rays: 17 - 25; Vertebrae: 27 - 29. Can be diagnosed from other species of the Austrolebias alexandri group by the following combination of characters: posterior margin of each pectoral fin in male reaching a vertical between base of second and fifth anal-fin rays (vs. between urogenital papilla and base of second anal-fin ray); origin of dorsal fin either on vertical through anal-fin origin or posterior to it (vs. anterior); and presence of vertical rows of light blue dots on entire flank in larger males (vs. light blue bars) . : elongated.
🌀 Behaviour
Behavioural data for Matilebias Periodicus is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Freshwater; benthopelagic; non-migratory. Subtropical South America: Ibicuí and Quaraí (= Cuareim) river drainages, rio Uruguay basin in southern Brazil and northwestern Uruguay.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
👥 Community & Contribute
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