How can you tell if your normal is het for something?

are there special markings/colorations?

When in doubt breed it out.

there is no way to tell if something is het just by looking at it if you are unsure breed it to another het or a visable recessive to prove it out then if you dont get no visable recessives than it is not het

By definition a het looks no different than a normal. there are some gets that some people say have indicators (het pieds) but there is nothing 100%.

There are only 2 ways to know and only 1 works 100% of the time.

1. knowing what the parents were (doesn't always work *50% het x normal pairing is an example where this doesn't tell you for sure*)

2. breeding to a visual or a verified 100% het of the morph will always work.

I like mine to be Het for Hungery :D