Astyanax Bacalarensis

📖 Overview

Astyanax Bacalarensis (Astyanax bacalarensis), first described by Soto, 2017 is a small fish in the family Acestrorhamphidae (order Characiformes). Adults typically reach 9.50 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 Acestrorhamphidae kept in the hobby.

🔬 Taxonomy

🐟 Physical Description

Dorsal soft rays (total): 9 - 11; Anal soft rays: 21 - 27; Vertebrae: 32 - 33. Astyanax bacalarensis is distinguished from its congeners in the Yucatan by the following characters: anal fin origin never overlapping last dorsal-fin ray (always overlapping in A. altior); head length 28% SL or less (27% or more in A. altior); predorsal length, mean 50.4% SL (mean 53% or more in A. altior and A. angustifrons); mean distance between origins of pelvic and anal fins, 20.5% SL (vs. mean 19.3% or less); humeral spot rectangular-triangular to oval (P-shaped to indistinct in A. belizianus and A. brevimanus) .: fusiform / normal.

🌀 Behaviour

Behavioural data for Astyanax Bacalarensis is currently being reviewed.

🦐 Diet

🥚 Reproduction

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical Central America: Quintana Roo, Caribbean versant of Yucatan Peninsula in Mexico, south to the Sittie River, Toledo district in Belize, west to Mopán in Guatemala.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🦠 Common Diseases

The following diseases are known to affect Astyanax Bacalarensis.

🐠 Related Species

🔍 Similar Species

👥 Community & Contribute