Unique fish appeared in my pond

[sissy]

Eggs can come in on frogs also .I had that happen and had it happen on plant roots in my stock tank

 

[Usman]

Hi,

It looks like you're getting cross breeding. Koi and Goldfish can produce young, but they tend to be sterile. The results can also be... interesting

I started with 3 goldfish, and added koi, and i have some *very* interesting fish now. It's cool to see what turns up each year

Unfortunately, with time, you'll also get genetic defects due to cross breeding a small population size, which shows up as tumors, malformed fish etc....

You might also find these black fish turn gold later, or keep some of the black markings.

Cheers,

Andy.

its true , i will share my experience of mollies , i had pond long time ago which had different types of molys like golden , white , black etc , they cross bred and after few generations there size became random some would stay small and there colour was getting grey , they were all messed up lol i was expectingi wud get new mixed colours , it did happen but just for 1 or 2 spawns