Periophthalmus gracilis

Periophthalmus gracilis, the slender mudskipper, known as belacak in Malay, is a species of mudskippers native to marine and brackish waters of the eastern Indian Ocean and the western Pacific Ocean where it is an inhabitant of the intertidal zone. Capable of spending time out of water, This species can reach a length of 4.5 centimetres (1.8 in) SL.^[1]

Slender mudskipper at the Vancouver Aquarium

Periophthalmus gracilis
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Gobiiformes
Family:	Oxudercidae
Genus:	Periophthalmus
Species:	P. gracilis
Binomial name
Periophthalmus gracilis Eggert, 1935

Relationship with humans

In folklore

In Malaysia and Indonesia, the folklore Batu Belah Batu Bertangkup has Si Tanjung's desire to eat slender mudskipper's eggs as the origins of the conflict of the well-loved folk-story, and tells the story of a widowed-mother and her two children.