Is catfish halal?
In the name of Allah, most Compassionate, Most Merciful,
In the three schools of fiqh other than the Hanafis [namely Shafi’i, Maliki and Hanbali], the general ruling is that the produce of the sea is permitted.
According to the Hanafi school, whatever is known to be from the fish family will be permitted, and the rest is unlawful (Hidaya, 4/71).
So, what about catfish?
Keeping this principle in mind, it is evident that catfish is without a doubt permitted (halal) according to the other three schools of fiqh. However, according to the Hanafi school, this depends on whether it is considered a fish or not.
After researching into the catfish, the scholars mention that it is a special type of fish, thus lawful to eat it. (See the Encyclopaedia Britannica, for example.)
And Allah knows best
Answered By: Shaykh Mufti Muhammad ibn Adam al-Kawthari