My sons [they should live, be well and increase!] just brought home a fish tank with a new fish. VERY FISHY!!!

[If you watched the Gong Show as a kid then you definitely just gave me a major gong!!]

Which brings up the question - is one allowed halachically to drink the water from a fish tank if the fish is not kosher. How can water not be kosher??

Well, there is a famous rule of "kavush ki'mivushal" - if something is soaked for 24 hours it is like cooking it. Here the unkosher fish is being soaked in the water, rendering the water unkosher.

MAYBE.

MAYBE NOT.

Can't give away all my secrets.

ויה"ר שנפרה ונרבה כדגים!!