Trimaculatus- with tankmates a realistic possibility?

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In nature, trimaculatus (a piscivore) shares habitat with Vieja zonatus/guttalatus (a herbivore) and Astatheros macracanthus (a sand sifter),
so neither are direct competitors.
Any piscivore that shared a tank with them, might be considered competition, and need to be vanquished.
I grew some out with other cichlids, but because I have only had them in 6 ft tanks, I never thought a tank of that size, would be large enough to handle more than a pair of adults.
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What's up Predator07 Predator07 ,
Trimacs are every bit as aggressive as a Midas or Red Devil. They are typically kept as a solo fish. They usually don't behave well with others. To keep them with other tankmates in a community setting can be difficult unless you have a very large tank and even then it might not work out. Trimacs are a beautiful fish but can dispatch most tankmates with ease. They are usually better off as a solo wet pet. When breeding they are best kept in a 180g minimum, usually with a divider. This is just my opinion. HTH
 
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What's up Predator07 Predator07 ,
Trimacs are every bit as aggressive as a Midas or Red Devil. They are typically kept as a solo fish. They usually don't behave well with others. To keep them with other tankmates in a community setting can be difficult unless you have a very large tank and even then it might not work out. Trimacs are a beautiful fish but can dispatch most tankmates with ease. They are usually better off as a solo wet pet. When breeding they are best kept in a 180g minimum, usually with a divider. This is just my opinion. HTH

The one trimac I'm getting is from Rio Niltepec Mexico... Does it matter where it's located (color/ behavior) ?
 
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So you're trying to keep 2 or more trimacs together? 2 males? I would think to do this you would want a long tank, like 10"+, to attempt to separate territories. Even then it's up to the fish if they want to put up with each other, but they will inevitably squabble.

Other than that, in an appropriate size tank, I could see a big trimac cohabitating with some larger, tough dithers like balas, tinfoils, other large barbs. Maybe some active, tough catfish like hoplos. Up to the individual fish though, it may well clear the tank of life no matter what.
 
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I had a 12"+ Male Trimac in a 120 (4x2x2).

I had three 7-8" females. One was usually in with the male. He was really rough on his girl during spawning, so they rotated out.

The females did fine in other large cichlid tanks. Tank mates such as Oscars, Dempseys, Salvini and similar.

The male was never kind to tankmates. When young he'd nip and run from cichlids tougher than him. He'd kill anything he could. As an adult, he could kill anything smaller than a medium dog (sarcasm).

I did add several adult male Convicts to the 120 gal. I also added many rocks and slate to create areas the Convicts fit, that the Trimacs couldn't. Im sure they were stressed, but it didn't show. It also took a lot of stress off the female.
 
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