Convict Blenny, school of juveniles - Pholidichthys leucotaenia
They are also called false catfish because their juveniles ressemble them but they lack among other features the barbels and are more rounded and shorter when juvenile. The adult looks gorgeous but I could not find one in this trip. See here: https://fr.wikipedia.org/wiki/Pholidichthys_leucotaenia
"Pholidichthys leucotaenia", commonly known as the convict blenny/goby or the engineer blenny/goby, is a marine fish from the west-central Pacific Ocean. It is neither a blenny nor a goby, but is in fact one of two species in the family Pholidichthyidae.
Similar species: Cichliformes
By Patomarazul
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Uploaded Jul 25, 2020. Captured Nov 8, 2019 04:32 in Indonesia.
comments (2)
"While their young are out feeding, the parents eject mouthfuls of debris from the burrows. In a single day as much as 3 kg of sand might be collected and spat out of the hole by the parents. Research has revealed a maze of tunnels and chambers totaling a length of some 6 m. At night, young fish dangle by their mouths from the roof of the tunnels by thin mucous threads." Posted 5 years ago