As you can see my silver arow isn't that silver especially the reddish colour on his fins. He's grown almost 2 inches in the month I've had him. He heats fresh prawns, muscles carnivore pellets and the odd Oscar pellet when he can. He's about 8.5 inches now. He's in with a ray so I've been hot on with the water.
Any ideas why?

Any ideas why?
