Macrognathus circumcinctus (Hora, 1924)
photo by JJPhoto

Family:  Mastacembelidae (Spiny eels)
Max. size:  28.6 cm TL (male/unsexed); max.weight: 67.0 g
Environment:  demersal; freshwater; pH range: 7; dH range: 15
Distribution:  Asia: Mekong and Chao Phraya basins, southeastern Thailand, Malay Peninsula and Sumatra, Indonesia.
Diagnosis:  Dorsal spines (total): 26-30. Differs from all other mastacembelids found in Myanmar and Thailand in having body with a series of very regular, oblique, dark bars, each with a narrow extension extending partially or entirely across abdomen, and having ripe females with a very elongate genital papillae (Ref. 39392).
Biology:  Occurs in streams to peats (Ref. 57235). Found in medium to large-sized rivers and flooded fields (Ref. 12975). Nocturnal, feeding on invertebrates and small fishes (Ref. 13371). Commonly seen in aquarium trades and fish markets (Ref. 57235).
IUCN Red List Status: Least Concern (LC); Date assessed: 11 December 2019 Ref. (124695)
Threat to humans:  harmless
Country info:   

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