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Cottus petiti Băcescu & Băcescu-Meşter, 1964 Chabot du Lez |
| Family: | Cottidae (Sculpins) | |||
| Max. size: | 6.4 cm SL (male/unsexed); max.weight: 4.0 g | |||
| Environment: | demersal; freshwater | |||
| Distribution: | Europe: sources of stream Lez in France. | |||
| Diagnosis: | Dorsal spines (total): 5-7; Dorsal soft rays (total): 15-16; Anal spines: 0-0; Anal soft rays: 11-13; Vertebrae: 30-30. Differs from other species of Cottusin France by the combination of the following characters: in juveniles and adults, prickling on body extending backwards to caudal peduncle; no distinct transverse bands on pelvic; last dorsal-fin ray reaching rudimentary caudal-fin rays; eye diameter 27-31%; interorbital distance 1.9-2.4 times in eye diameter; last anal-fin ray connected to body by a membrane along about 2/3 of its length; depth of caudal peduncle 24-28% HL (Ref. 55856). Caudal fin with 13 to 16 rays (Ref. 40476). | |||
| Biology: | Found in cold, karstic spring (Ref. 59043). Laboratory experiments, using natural photoperiod and constant temperature of 15-16°C corresponding with those of its habitat, showed that a female could lay eggs several times with less than one month interval. Between 20 to 70 eggs of relatively large size (2.1 mm) are laid (Ref. 30578). | |||
| IUCN Red List Status: | Critically Endangered (CR); Date assessed: 04 October 2023 (B1ab(iii)) Ref. (130435) | |||
| Threat to humans: | harmless | |||