Can fish see each other from a separate tank?

[Swoff11]

I’m currently upgrading from a 45 bow front to a 90 gallon. I have a flame angel in the 45 and a coral beauty in the 90. The tanks are about 3 inches apart. I’d like to try to put the flame angel in the 90 soon using a breeder box and the mirror method but I was curious if they could see each other already. I’m assuming not so I’ll lean on the side of caution and if all else fails I’ll just trade the coral beauty.

 

[Maritimer]

I should imagine that they can ... I've piloted a mini-sub inside a shark tank, and could definitely see people outside. If there was another tank - preferably well-lit - in that environment, I'm quite certain I'd have been able to see the fish inside it.

Welcome to R2R!

~B.

 

[Swoff11]

I should imagine that they can ... I've piloted a mini-sub inside a shark tank, and could definitely see people outside. If there was another tank - preferably well-lit - in that environment, I'm quite certain I'd have been able to see the fish inside it.

Welcome to R2R!

~B.

Ya here’s a view from one of the cameras I have it’s clear as day. When I was googling before posting here someone said they can’t see through glass which I don’t really believe that because they react to us and even know who feeds them. Hopefully it kinda helps them get used to each other but I’ll be careful anyway.

 

[Doctorgori]

Yup, FACT I have directly observed it …even as far as 5 or 6 feet away…
Heck they see me from across the room and get into their begging act …
While we are at it, they can also tell people apart…Im not the only person to notice this either

 

[joseph scott]

I observe that my fish (at least some of them) can recognize faces. They beg for food and follow me when I’m in front of the tank. When other members of my household approach the the tank they don’t react in the same way. When strangers approach they hide.