A writhing mass of uniquely-patterned eel-like fishes in a net seemed to jump out of the email inbox, demanding attention. But what are they?
Killifish keepers may recognize Spectrolebias costae, a challenging annual micro-killi. Based on new genetic evidence, there could be a second species floating around in the aquarium hobby.
Introducing three new eartheaters: Geophagus rufomarginatus, Geophagus multiocellus, and Geophagus santosi, all found in northeastern Brazil.
Dr. Adeljean Ho walks us through the animal life that completes his vivarium, both above and below the water.
Learn how the strikingly metallic Prakash Barb caused problems for researchers until genetic testing revealed its existence.