Hi! Many people enjoy maxima clams because they are usually very blue and don’t get overly large. They can be blue, green, gold, brown, and have a lot of pattern varieties.
Crocea clams are also very good, they come in lots of colors like blue, green, gold, and brown with a lot of patterns. They don’t get too big either.
Clams are very easy as long as you have good water quality. Keep your calcium up because they need it for their shell. Small ones also enjoy being fed phytoplankton a couple times a week. They need high light (I have mine under an AI Prime) and they will scoot around a little to get in a position they like. They should be exactly upright to make sure they get enough light and they should have some hard substrate/clam cradle to sit on so they stay upright. Don’t move your clam after it attaches, this could damage the foot.
Make sure your clam is very healthy when you get it (if you wave your hand over it to make a shadow it should close very quickly, and check for pyramid snails on the outside)
Here’s a pic of my little maxima!