| Family: |
Ariidae (Sea catfishes), subfamily: Ariinae |
| Max. size: |
59.5 cm SL (male/unsexed) |
| Environment: |
demersal; freshwater |
| Distribution: |
Central America: endemic to the Río Usumacinta basin in Guatemala and Mexico. |
| Diagnosis: |
Dorsal spines (total): 1-1; Dorsal soft rays (total): 7-7; Anal soft rays: 19-23. Distinguished from other freshwater ariids occurring in Mesoamerica by the following combination of characters: presence of accessory tooth patches on palate; premaxillary tooth band length 2.4-2.9 in its width; ; snout length 1.4-1.8 in postorbital length; lateral gill rakers on first gill arch 17-20 (mode 19); mesial gill rakers on first two gill arches well developed; accessory palatal patches with numerous pointed-conical teeth; premaxillary maxillary barbel not extending behind gill membrane; and dorsomedian fleshy groove on head absent (Ref. 75770). |
| Biology: |
Occurs only in freshwater, preferring the main channel of medium to large rivers (Ref. 75770). |
| IUCN Red List Status: |
Data deficient (DD); Date assessed: 07 September 2018 Ref. (130435)
|
| Threat to humans: |
traumatogenic |
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