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Triplophysa arnoldii Prokofiev, 2006 |
| Family: | Nemacheilidae (Brook loaches) | |||
| Max. size: | 7 cm SL (male/unsexed) | |||
| Environment: | demersal; freshwater | |||
| Distribution: | Asia: Western Mongolia. | |||
| Diagnosis: | Dorsal spines (total): 3-3; Dorsal soft rays (total): 7-7; Anal spines: 2-3; Anal soft rays: 5-6; Vertebrae: 39-42. Distinguished from its congeners in having skin densely covered with wart-like epidermal tubercles developed in both sexes at all the ontogenetic stages; 4 pectoral bony radials of distinct shape; anterior and posterior nares closely spaced; occipital canal interrupted, with 2+2 pores; caudal peduncle laterally compressed and shorter than the head; well-developed free air-bladder portion in the abdominal cavity; intestine long and spirally coiled; anterior fontanelle in the skull; 3 basibranchials and 2 pairs of infrapharyngobranchials in the branchial apparatus; epural considerably shortened, the pads of the breeding tubercles are weakly-developed in the preorbital region of the mature males (Ref. 57977). | |||
| Biology: | A moderately small species, found mature at 68-70 mm SL (Ref. 57977). | |||
| IUCN Red List Status: | Not Evaluated (N.E.) Ref. (130435) | |||
| Threat to humans: | harmless | |||