A couple to identify pls and an issue with aggression.

[reeses]

Would the first fish be a red empress or?
Also I'm having issues with my haps, peacocks. They have been fine for over a year in my 90g and the 7 full size all came from same place anf grew up together. The red shoulder was previously the boss he would put others in place and move on. Past couple months red shoulder stepped down and this blue if you could identify also I'd appreciate it? has been causing kayoss with the 6 similar sized fish in my tank. He is getting really nasty. Red shoulder useto be beautiful and as you can see is now washed out . I have some smaller cichlids that are not involved in this right now and suppose to be male however I guess I better verify that next. Lithobates at bottom being picked on but so far holding his own thanks for your time.
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[reeses]

Would the first fish be a red empress or?
Also I'm having issues with my haps, peacocks. They have been fine for over a year in my 90g and the 7 full size all came from same place anf grew up together. The red shoulder was previously the boss he would put others in place and move on. Past couple months red shoulder stepped down and this blue if you could identify also I'd appreciate it? has been causing kayoss with the 6 similar sized fish in my tank. He is getting really nasty. Red shoulder useto be beautiful and as you can see is now washed out . I have some smaller cichlids that are not involved in this right now and suppose to be male however I guess I better verify that next. Lithobates at bottom being picked on but so far holding his own thanks for your time. Pics are all out of order
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[jsc]

All male tanks are always a work in progress. Sometimes the only way to solve problems are removing a fish. Before you do that, I'd recommend a rescape of the tank. Change it up, give some new hiding spots. Sometimes that's enough to calm it down.

 

[james99]

First 2 pics look like hybrids of some kind, 3 is a German/ruby red. The last looks like a protomelas of some kind, maybe a red empress. You have a low number of fish, if this is a standard 75. I would shoot for 20-12 total. Adding more fish and a rescape may work or the aggressor may have to go. I've had to move numerous fish that I've really liked of the years due to aggression. Also make sure everyone is male, one female could cause chaos.

 

[reeses]

I should have clarified those are not all the fish in the tank. 3 other large ones, 6 yellow labs, 2 blue dolphins,
2 ob, a few smaller ones plus the ones in above photos. 90 gallon tank. I'm hesitant to add more fish as I know the dolphins get fairly large. If big blue is removed will another take his place?

 

[james99]

Someone else will become dominate, but each fish is different so it may be a "more kind" ruler.

 

[quennosabe]

All the fish you mentioned are fairly peaceful. They should be able to get along in the same tank.

 

[reeses]

Thanks all for the replies. Since I rearranged they seem a bit better.

 

[markstrimaran]

Line of sight breaks, and split into 3 territorial boundries area.

Big blue fish, left lower corner, The nearest cave is his. He use to own the whole tank.

 

[Gates72ss]

it happens alot , new tank boss will show up eventually ...if not and he is hurting others constantly , you might have to make a decision ...re arrange the tank completely and see how that goes ...sometimes the fish who was the little guy becomes the big guy now and just puts a hurting on everyone because he can ..