Cryptocentrus altipinna Hoese, 2019
Highfin shrimpgoby
Cryptocentrus altipinna
photo by Randall, J.E.

Family:  Gobiidae (Gobies), subfamily: Gobiinae
Max. size:  5.5 cm SL (male/unsexed); 5.9 cm SL (female)
Environment:  reef-associated; marine
Distribution:  Indian Ocean: from Tanzania, Sri Lanka, and the Andaman Sea off Thailand.
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 10-10; Anal spines: 1-1; Anal soft rays: 9-9. This species is distinguished by all features pertaining to the C. strigilliceps complex to which this species belongs to, including the following: first dorsal fin very high, much higher than second dorsal fin and about 1.2-1.5 times higher than body depth at anal-fin origin in adults and equal to depth at anal-fin origin in juveniles, with pointed margin, second to fourth spines distinctly longer than other spines, fourth spine longest in adult (second or third longest in juveniles), but not distinctly prolonged into a filament; mouth moderate, ending below posterior lower quarter of eye, just behind pupi, with jaws forming angle of 24-26° with body axis, upper margin of upper jaw in line with point about one-quarter to one-third pupil diameter below eye; gill opening reaching to below a point just under and before posterior preopercular margin; head papillae minute and not on distinct ridges; scales ctenoid posteriorly on body, becoming cycloid anteriorly on midside below posterior end of first dorsal fin; predorsal area naked, with scales reaching forward to a curved line from first dorsal-fin origin to upper pectoral-fin insertion; sides of head with irregularly shaped elongate spots and numerous small bluish white spots (black when preserved); sides of body with scattered, minute, bluish white spots and with irregularly shaped spots on midside with faint bands extending ventrally from spots; pelvic fins fused, with a frenum, and large, reaching to or just short of anus; longitudinal scale count 18-22 cycloid scale rows anteriorly plus 39-43 ctenoid scale rows posteriorly, total 59-65; transverse scale count (TRB)=20-22 (Ref. 119508).
Biology:  The species has been reported to occur from seagrass beds with sandy-mud bottoms (Ref. 119508).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (124695)
Threat to humans:  harmless
Country info:  Collected from Mafia Island (Ref. 119508).


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