Guppy fry have been raised in a seprate netted grow out box. They are now .75 of an inch. Can i release them into the tank? Its 30 gallon. Live plants (1 crpyts, vallisneria, guppy grass). The only issue is that the last batch didnt survive. Maybe due to the rainbow shark. Can i release them now into the tank? Dont like the look of the netting box in the tank. Also lots of hiding space in between the lava rock.