Ellis Cory Cat (Corydoras ellisae)
The Ellisae Cory Cat is a member of the Callichthyidae family, commonly known as armored catfish. It grows to a mature size of 2 inches and features a silver body with shimmery yellow accents on the rear half of its underbody, fins, and face.
Females are typically larger and more fully developed than males, with rounder fins compared to the pointed fins of males.
This species prefers a well-planted aquarium with ample hiding spots to avoid direct light exposure. As a bottom-dwelling scavenger, it requires a smooth sand or gravel substrate to prevent damage to its sensitive barbels.
The Ellisae Cory Cat is a schooling fish and should be kept in groups within a community tank for optimal behavior and well-being.
| Feature | Detail |
|---|---|
| Size at maturity | 2 inches |
| Coloration | Silver body with shimmery yellow on underbody, fins, and face |
| Sex difference | Females larger and fuller-bodied; females have rounded fins, males have pointed fins |
| Habitat preference | Well-planted tank with hiding spots; bottom-dwelling; smooth substrate |
| Behavior | Schooling fish; prefers group housing in community tanks |
FAQ
What is the typical size of an Ellis Cory Cat?
The Ellis Cory Cat reaches a mature size of 2 inches.
How does the coloration of male and female Ellis Cory Cats differ?
Females have a fuller body and shimmery yellow accents on the underbody, fins, and face. Males have pointed fins and are generally smaller and less rounded in body shape.
What type of substrate is recommended for Ellis Cory Cats?
A smooth sand or gravel substrate is recommended to prevent damage to their sensitive barbels.

Warren Bailey –
Added a group of Ellis Cory Cats to my 10-gallon tank. They are very peaceful and stay near the bottom. The tank has plenty of plants and smooth sand, which helps them feel secure. They look healthy and active after a few weeks.
Brandon Jones –
The fish are easy to care for and blend well with other community fish. I noticed the females are slightly larger and have a fuller appearance. The yellow accents on their fins are subtle but noticeable.
Irene Walker –
I kept them in a planted tank with hiding spots. They don’t jump or disturb the water column. The barbels stay intact because of the smooth sand. They swim slowly and seem content.