first after i put my new rays in to the original tank, the sens started to bite the rays...so i put my sens in a diff. tank....then the ate; 4 darters, a glo fish, a crown tail beta, and an adult sailfin mollie...in 6 days...i didn't change their feeding habits or anything they just ate more...so last night i made a 29gal rubbermaide stock tank to prevent more killings...anyone expirienced this before with sens?