Hey! I recently was given a new WTF because he had been stranded at a pet store for too long. he is about the same age as my female WTF so I agreed to take him home, assuming they would be similar enough sizes to live together (40 gallon).

Once I brought him home I realized he was about 1/4 larger than the female I already own. Though his head is not big enough to swallow her widest part, he does feel quite large next to her and I'm worried he may be aggressive.

I know that WTF can be cannibalistic but also can be wonderful together-

What are people's experiences with different
sized WTF, what size difference is too great?

How do WTF normally react when meeting a new tank mate/ what should I watch out for?




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