Earlier I mentioned that I added some new fish. I took some pictures of a couple of them tonight. Please excuse the microfiber particles, I didn't notice them until I cropped and zoomed the pictures, and I'm too lazy to retake them.
Today I'm going to show the Archocentrus centrarchus pair that I got from Jeff Rapps (tangledupincichlids).
Here is the female. She's starting to show some of the adult coloring. I estimate she is about 4 inches. She can change her stripe colors quite a lot. Sometimes they are barely visible, other times darker, and she can make her whole body almost black if she wants to hide (like when I'm messing around in the tank).
Here are a couple shots of the male, who seems to be closer to 4.5". You can see he is getting the blue stripe down his midline and also on his fins.
These guys are peaceful, not seeing any aggression between them and the other fish. They all get along swimmingly.
However, there is aggression from the male to female. He will sometimes chase her around, but he never harms her, and she isn't stressed, seems very relaxed. She will still cozy up to him, and he seems to tolerate her for the most part but will chase her around a bit. It almost seems like she is inciting him into a chase sometimes. I think it's normal, but please tell me if I'm wrong.