| Family: |
Characidae (Characins; tetras), subfamily: Stethaprioninae |
| Max. size: |
6.27 cm SL (male/unsexed) |
| Environment: |
benthopelagic; freshwater |
| Distribution: |
Central America: Tamiahua to Nautla in northern Veracruz, Mexico. |
| Diagnosis: |
Dorsal soft rays (total): 10-11; Anal soft rays: 20-25; Vertebrae: 31-33. Astyanax tamiahua is distinguished from other congeners in Veracruz and northern Mexico by the following characters: body deeper, mean 35.9% SL (vs. mean 33.9% SL in A. argentatus); head length, more than 26% SL (vs. 26% or less in A. acatlanensis, A. argentatus and A. rioverde); in lateral view, supraoccipital slightly concave (vs. angled in A. finitimus); infraorbital II, triangular with an angled base (vs. with a long convex base in A. argentatus and A. mexicanus); first dorsal pterygiophore, rostral edge angled (vs. curved in A. argentatus and A. mexicanus) (Ref. 118583). |
| Biology: |
|
| IUCN Red List Status: |
Vulnerable (VU); Date assessed: 13 September 2018 (B1ab(i,iii)) Ref. (130435)
|
| Threat to humans: |
harmless |
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