Just bought a second hand 100 litre 3 ft tank. Have intentions to clean it all up and put some black sand in and maybe aqua scape a little. The problem is the tank has come stocked with fish - opaline gourami, honey gourami and some minnows. I obviously need to move these to a new home. Any ideas how I can do so do you think pet shops would be receptive to taking a mixed bag of fish?