Why is my Krib doing this

Congrats on your Kribs breeding! All your fish should actually be okay, the Kribs will guard the nest from the other fish and take care of the fry. I've got two of my own breeding aswell. I've got four all up though, one adult male (Jason), his mate (Nel), my other adult female (Tash) and Jason's only surviving fry from the first batch, Mikey.
I got them all in with a rather large Eel-Tail Catfish, a female Jack Dempsey, one Electric Blue cichlid and two Chocolate cichlids (those are the main threats anyways). Jason and Nel are less than a 1/3 of the other cichlids, alot less compared to the Eel-Tail, but they still stand up to the other fish and defend their nest rather viciously.

Once again, congratulations on having your Kribs breed! They are by far the best fish to keep. Have fun with the fry XD
 
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