is there any definitive way to tell the difference between the two? my understanding is that armatulus are more commonly available and that costatus grow slightly larger.
are there any differences in behavior or markings. my raphael is more of a gray/black striped vs. bold white/black. anyways i just wanted to know what the catfish experts on here knew.
are there any differences in behavior or markings. my raphael is more of a gray/black striped vs. bold white/black. anyways i just wanted to know what the catfish experts on here knew.
