Astyanax Tehuacanensis
📖 Overview
Astyanax Tehuacanensis (Astyanax tehuacanensis), first described by Soto, 2017 is a small fish in the family Acestrorhamphidae (order Characiformes). Adults typically reach 7.50 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 Vulnerable.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; Anal soft rays: 18 - 23; Vertebrae: 32 - 33. Astyanax tehuacanensis is distinguished from other congenes in central Mexico by the following characters: rays on anal fin, mean fewer than 24 (vs. mean 24 or more in A. aeneus); total gill rakers, mean fewer than 20 (vs. mean 22 or more in A. finitimus); head shorter, mean 21.9% SL (vs. mean 23.8% or more); snout shorter, mean 3.3% SL (vs mean 4.2% or more); interorbital, mean 8% SL (mean 9-10% SL in A. acatlanensis and A. mexicanus); pectoral fin shorter, mean 19.3% SL (vs. mean ca. 21% in A. acatlanensis and A. mexicanus); anterior fontanel longer (vs. shorter); infraorbital II, triangular with an angled base (vs. base convex in A. acatlanensis, A. aeneus and A. mexicanus); epibranchial III, distal segment straight (vs. curved in A. finitimus and A. mexicanus); first dorsal pterygiophore, dorsal edge angled (vs. curved in A. mexicanus) .: fusiform / normal.
🌀 Behaviour
Behavioural data for Astyanax Tehuacanensis is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Freshwater; benthopelagic. Tropical Central Ameica: endemic to the Río Salado (Gulf of Mexico versant), south of Tehuacán in central Mexico.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🦠 Common Diseases
The following diseases are known to affect Astyanax Tehuacanensis.
🔍 Similar Species
👥 Community & Contribute
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