like everybody said, it depends on the fish. my last big one i had used to let me pet him, this one now thinks my hand is a treat. i've had the ones that punk people out, and puss out when the opposer has had enough, and my guy name doesn't back down to anything. i've raised mean ones, and young ones, and it always turns out differently. tankmates play a great part in this too. the more aggressive the tankmates, the more the texas will be. they are always very owner responsive, and usually demand respect in all my experiences.