Periophthalmus malaccensis Eggert, 1935
Periophthalmus malaccensis
photo by Polgar, G.

Family:  Oxudercidae (Mudskippers), subfamily: Periophthalminae
Max. size:  9 cm SL (male/unsexed)
Environment:  demersal; freshwater; brackish; marine, amphidromous
Distribution:  Western Pacific: Singapore (type locality), Indonesia and the Philippines.
Diagnosis:  Distinguished by the following characteristics: pelvic frenum prominent; pelvic fins partially united by basal membrane; D 1 height moderate, its margin slightly rounded, a brown stripe inframarginally with numerous white spots proximally, first spine elongate; D2 with single dusky stripe mesially; dorsal fins not connected by membrane; D 1 with 9-10 spines; longitudinal scale count 47-61; head width 14.3-19.5% SL; pelvic fin length 13.6-16.1 % SL; length of anal fin base 15.4-20.6% SL; length ofD2 base 17.0-23.2% SL; total D2 elements 11-12; total anal fin elements 11-12; TRDB 14-17 (Ref. 5218).
Biology:  Amphibious air-breather (Ref. 31184).
IUCN Red List Status: Data deficient (DD); Date assessed: 10 August 2020 Ref. (130435)
Threat to humans:  harmless


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