Do you meen mississippi map turtles? (mud is proberly another name for them) They are kept just like any other turtles, missisippi map turts; male getting 3 ½” to 5” and the female between 6” to 10”. so there are a small type of turtles. like all turts they need a uv strip or open spot bulb and a basking light in an area above there dock (out of water area), you need a good filter and a water heater on about 24c.
say you have 3 small full grown m.mud turts they will need a 3ft by 2ft tank

x