Trichonotus blochii Castelnau, 1875
Bloch's sand diver
Bloch's sand diver,  Bloch’s sanddiver
Trichonotus blochii
photo by Endo, H.

Family:  Trichonotidae (Sanddivers)
Max. size:  14.3 cm SL (male/unsexed)
Environment:  benthopelagic; marine
Distribution:  Eastern Indian Ocean to Western Pacific: northern Australia.
Diagnosis:  Dorsal spines (total): 5-7; Dorsal soft rays (total): 43-46; Anal spines: 1-1; Anal soft rays: 39-41; Vertebrae: 55-55. This species is distinct with the following set of characters: D V-VII,43-46; A I,39-41; lateral line scales 57-60; gill rakers 4-6+17-21; vertebrae 55; head length (HL) 18-20% SL; snout length 25-31% HL; infraorbital and supraorbital canals separated anterior to eye; elongated dorsal fin spines in males 4-6; caudal fin in males with 2 black stripes (Ref. 84215).
Biology: 
IUCN Red List Status: Not Evaluated (N.E.) Ref. (130435)
Threat to humans:  harmless
Country info:  Type locality, Gulf of Carpentaria, MNHN A.5208 (holotype of Trichonotus blochii, 14.3 cm SL, male). Known only from northern Australia, from about Broome (Western Australia) to about Bowen (Queensland) (Ref. 84215). Also Ref. 75154.


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