Milyeringa veritas Whitley, 1945
Cave gudgeon
photo by Larson et al, 2013

Family:  Milyeringidae (Blind cave gudgeons)
Max. size:  5 cm SL (male/unsexed)
Environment:  pelagic; freshwater; brackish; pH range: 6.80000019073486 - 7.5; depth range 0 - 32 m, non-migratory
Distribution:  Australia: subterranean waters below the narrow coastal plain between North West Cape and Yardie Creek; Five Mile, Homestead, Kudmurra, Milyering (Mangrove), New Yardie, Pilgramuna and Tantabiddi Wells. Threatened (Ref. 35759).
Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 13-13; Anal spines: 0-0; Anal soft rays: 9-9. Head large, broad and depressed. Eyes not visible. Mouth large, horseshoe-shaped. Cardiform teeth. Rows of well developed sensory papillae on head and trunk. Scales are reduced and entirely absent from the head. Whitish coloration in the skin.
Biology:  Lives beneath coastal limestone in perpetually dark, slightly brackish subterranean water (Ref. 44894). Cave-dweller, lacking eyes and skin pigmentation, with well developed system of sensory papillae on the head. Found swimming slowly or suspended near the surface of wells and sinkholes, particularly at night. This is possibly due to the occurrence of food items, e.g., algae, small insects or invertebrates, on the water surface. May also feed on detritus concentrated at the bottom of such openings. May tolerate temperatures to 30°C; salinity 0.2-34 ppt. Co-occurs with the blind eel.
IUCN Red List Status: Endangered (EN); Date assessed: 17 January 2019 (B1ab(ii,iii)+2ab(ii,iii)) Ref. (130435)
Threat to humans:  harmless


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