Good guess. 26. Fish removed only last year though as my job moves me around a lot and i didn't want to be moving the fish too.
My mum rang me up once while i was working abroad and asked if all the small fish in the small tank could go in the big tank with the big fish so there was only one tank to keep an eye on. I said yes if you want the small ones to be eaten. she thought i was joking and moved them! rang me up the following day panicing saying half the fish had vanished!
Actully, maybe my mum not wanting fish is a good thing.