How cryptic are fusigobius

[jeep and goose]

HS anyone ever kept a fusi goby, and if so how often did they hide? Also do you think they would get into fights with a diamond goby, cause I haven’t seen mine today. The diamond looks fine though I’ve heard they are a cave goby so I’m assuming it’s jut in the big cave under my rock works

 

[jeep and goose]

Well I found him he’s just hiding a bit deeper in his usual spot but still happy to get info on him