Andy Sager
Aquarium Advice Addict
Andy, you mentioned about culling the deformed fry. What should I be looking for? I've noticed a few that still look like they are only a couple of days old. Should I look for deformed fins and things of that nature? Doing this though may be the answer I've been looking for because I was fretting over how I was going to get all those fry in the 15g. Was going to put them in the 20 I had for the pair I thought was pairing off in my community tank, but they calmed down, so I figured I was mistaken. WAS! Cleaning my 55 and I saw some stuff on a UV sterilizer and went to wipe it off, when all of a sudden DOHHHH! Those were eggs, and fertilized at that. This pair is the exact opposite of my original breeders. The male is a gold cap and the female is a half black(?) not sure of the type. I'll post a pic tomorrow if I can. Talk about a surprise!
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Here are the guidelines I try to adhere to ( and hope everyone else starts to). TAS Library - Conformation Standards for Freshwater Angelfish
In your case, since you are a first timer, I would not be in a hurry to cull just so that you know when the fish are actually done forming their fins and just growing them larger. I would wait until the fry are at least dime sized to cull. Depending on how many fish you actually have, the 15 or 20 is not going to be large enough to grow these fry out. Especially if you save more than a dozen of them. Overcrowding will inhibit their growth and effect their health long term. You will need either more tanks or larger tanks for growing them out. That's Angelfish breeding for ya.