Aggressive Tig

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swedeboy78

swedeboy78

Candiru
MFK Member
Sep 21, 2011
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My crib
I've had a Tig for about 6 months now, he's gone from 12" to a thick 18" I'd guess. At first he didn't seem to bother tankmates at all but in the last month he's taken out several fish of various sizes, largest being two 9" Tats.

Have you experienced Tigs getting more aggressive as they get larger?

I've seen 20" Tigs hanging with 6" clown loaches with no issues which is why I'm asking. He gets plenty of food.


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What size tank is it in? As catfish grow larger most become increasingly territorial. As they grow the size of their territory does as well. I am not expirienced with tig and can only speak on behalf of large catfish in general.

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If a tank mate fits (girth-wise) in a tig's mouth, it is at risk at any age, I think. Brachyplatystomas are highly predatory, not scavengers and appear to always prefer live versus dead foods, given a choice. Clown loaches have what appears an efficient defense in the form of sharp spines under their eyes but if they fit well in a tig's mouth, I'd not house them together either.
 
thebiggerthebetter said:
If a tank mate fits (girth-wise) in a tig's mouth, it is at risk at any age, I think. Brachyplatystomas are highly predatory, not scavengers and appear to always prefer live versus dead foods, given a choice. Clown loaches have what appears an efficient defense in the form of sharp spines under their eyes but if they fit well in a tig's mouth, I'd not house them together either.
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Totally missed the clown loach part. The size difference is important because as the fish grows and the other fish dont his menu will become larger also. He could live fine with a certain fish for years and one day decide it is small enough to be prey. I see people making this mistake a lot with predatory catfish. Fish dont form friendship bonds like some people would like to think. They are predators and with that comes the fact that they are territorial to a degree also.

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Just taken a swing at it but I'm a summing that the more he settles in the tank and makes it his home, the more aggressive he will get. If you move him or rearrange the tank, he should settle down until he gets adjusted agin. But then again, my tig was aggressive and I didn't see myself keeping him with anything expensive haha.
 
He's in a 600, 8x4x30" so I like to think he's got plenty of room at the moment. But you guys are right, he does seem to have gotten much more territorial the last month or so. Constantly chasing other fish away as they come close to his quarters.


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Mine is aggressive but to slow to kill anything

If the tig can kill fish then the tank is to small and other fish don't have room to keep out of its way

Mine always snaps at my big 14" barbs as the tig hovers in mid water when the lights go out

As your tank is 600 gal you should have plenty of tank space so I take it the tig is defending a cave of driftwood


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