Well the tank with the Guppys is a year old now and it only has Guppys and one of those little tiny catfish with the fat bellys, their all about 6wks old maybe 7 the Guppys that is, I have another tank which is 3ft and has the Tetras in but due to a break up I have to give that tank back so need to be able to put the Tetras in with the Guppys without them eating them because their my best fish the Guppys
Thanks extra info is good but would I be better off trying to buy a cheap small tank for the moment and putting the water from the current tetra tank in their and putting them alone just incase they hurt the guppys?