Astyanax Rioverde

📖 Overview

Astyanax Rioverde (Astyanax rioverde) is a ray-finned fish of the family Acestrorhamphidae. It inhabits freshwater waters. This species can reach a maximum total length of 7.5 cm. With a trophic level of 2.9, 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 soft rays (total): 9; Anal soft rays: 20; Vertebrae: 32 - 33. Astyanax rioverde is distinguished from its congeners in central-northern Mexico by having the following characters: scales around caudal peduncle, modally 16.5 (vs. fewer); body deeper, mean 37% SL (vs. mean 34% SL in A. argentatus); interorbital, mean 9-10% SL (vs. mean 8% SL in A. tehuacanensis); maxillary 10.2% SL or shorter, mean 9.5% (vs. 10.1% SL or longer, mean 11.1% in A. argentatus); base of anal fin, 24% SL or shorter (vs. 23% SL or longer in A. argentatus); anterior fontanel short (vs. longer in A. mexicanus and A. tehuacanensis), convex-sided (vs. straight-sided in A. acatlanensis, A. mexicanus and A. tehuacanensis), sharp-tipped (vs. blunt in A acatlanensis and A. mexicanus); infraorbital II, triangular with an angled base (vs. base convex in A. acatlanensis, A. argentatus and A. mexicanus); first dorsal pterygiophore, rostral edge, angled (vs. curved in A. argentatus and A. mexicanus); and humeral spot oval (vs. triangular-rectangular) .: fusiform / normal.

🌀 Behaviour

Behavioural data for Astyanax Rioverde is currently being reviewed.

🦐 Diet

🥚 Reproduction

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical Central America: Río Pánuco drainage in San Luis Potosí, Mexico.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🦠 Common Diseases

The following diseases are known to affect Astyanax Rioverde.

🐠 Related Species

🔍 Similar Species

👥 Community & Contribute