Whoa no need to get aggressive bud. I thought the one on the right was a male bleeding heart, as the guy who I took them from had told me.chromedome52 said:First, the circled fish is a male Ornate Tetra, not a Bleeding Heart. The fish to the right is a female Bleeding Heart, notice the red spot. The difference is really very obvious if one stops to think about it. And before you ask, no, they will not hybridize.
Second, your average Tetra is an egg scatterer; they do not breed in caves or flowerpots. This male Tetra has simply selected a spot he likes, and is just waiting for a female of his own kind to swim by. They can be slightly territorial, but it's the clump of plants he's "protecting", not the flowerpot.