You know what ? I’ve tried to figure that out but they all have such a poker face that I can’t tell what they’re thinking .
It depends on the species. Based on facial expressions and my short experience.
Tetras: What am I doing here ? Where are we going ???
Goldfish: Wanna play ??? Catch me sheriff...
Platies: Cocoricooooooooo, I'm a rooster today !!!
Catfishes: Ohhhh, that is sooooo smooth !!!
Gouramies: Look At that paint finish, bud !!!
Barbs: ...I ain't gonna a take it... Anymore...
Cichlids: Wanna wind that block ? Are ya scared to get wet ?
Betta: Please, please, please gimme a goody... Or. What are you looking at ?
Guppies: Anybody Seen My Baby !?!
Angels: Sorry I've stepped on your dress tail my dear !
Loaches: I see you... But can you see me ?!?
Something like that
