Occasional-shrimp goby
Drombus bontii is a species of goby native to the Indian Ocean from the Bazaruto Archipelago of Mozambique through to the tropical waters of the western Pacific Ocean. This species can reach a length of  TL. The status of this species is questionable, with Maurice Kottelat considering it to be a junior synonym of Drombus triangularis. References

occasional-shrimp goby
occasional-shrimp goby
Fish of Mozambique
Marine fish of East Africa
Fish of the Indian Ocean
occasional-shrimp goby