Amblyopsis spelaea DeKay, 1842
Northern cavefish
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 Family:  Amblyopsidae (Cavefishes)
 Max. size:  11 cm TL (male/unsexed)
 Environment:  demersal, non-migratory
 Distribution:  North America: Indiana and Kentucky, U.S.A.
 Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 9-11; Anal spines: 0-0; Anal soft rays: 8-11; Vertebrae: 29-30. Pink-white. No eyes (vestigial eye tissues under skin). Extremely small pelvic fins (rarely absent). Large, broad head. Caudal fin with 4-6 rows of papillae; 11-13 branched caudal rays.
 Biology:  Blind and depigmented. Despite the lack of eyes it does respond to light and moves away from it (scotophilia). Inhabits subterranean water or caves which have consolidated mud-rock substrates in shoals and silt-sand substrates in pools but is more often found in caves with uniform silt-sand substrates (Ref. 34868). Has low reproduction rate and broods eggs in gill cavity for up to 4-5 months (Ref. 557; 34868; 27795). Can live for 2 years without food because of low metabolic rate (Ref. 5326). Top predator.
 IUCN Red List Status: Near Threatened  (Ref. 96402)
 Threat to humans:  harmless
 Country info:   
 

 Entered by: Froese, Rainer - 01.05.91
 Modified by: Froese, Rainer - 16.10.04
 Checked by: Froese, Rainer - 02.10.98

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