Serrapinnus Aster
📖 Overview
Serrapinnus Aster (Serrapinnus aster), first described by Malabarba & Jerep, 2014 is a tiny fish in the family Characidae (order Characiformes). Adults typically reach 3.30 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Least Concern.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Characidae kept in the hobby.
🔬 Taxonomy
🐟 Physical Description
Dorsal soft rays (total): 10 - 11; Anal soft rays: 19 - 22. Serrapinnus aster can be distinguished from all congeners except S. potiguar, by having scimitar-shaped ventral procurrent caudal-fin rays in mature males, almost all of which form a semicircle, resulting in a portion of the ventral procurrent caudal-fin rays having a multi-pointed partial star-shaped margin (vs. ventral procurrent caudal-fin rays rod-shaped or spatulate, usually parallel to each other, except for the anteriormost procurrent rays being inclined forward in some species). It differs from S. potiguar and congeners by having 7-9 cusps on the premaxillary teeth (vs. 5 cusps in S. microdon and S. potiguar, 9 -11 in S. lucindai, S. sterbai and S. tocantinensis and 10-12 in S. gracilis and S. littoris), incomplete lateral line (vs. complete in S. heterodon), dorsal fin hyaline (vs. with a proximal black blotch in S. notomelas), and the absence of a black spot on the posteroventral region of the abdomen (vs. presence in S. kriegi) .: elongated.
🌀 Behaviour
Behavioural data for Serrapinnus Aster is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Freshwater; benthopelagic. Tropical South America: Upper portions of the rio Tocantins basin, mainly in the tributaries of the rio Paraná and rio Tocantins, Brazil.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🦠 Common Diseases
The following diseases are known to affect Serrapinnus Aster.
🔍 Similar Species
👥 Community & Contribute
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