Lyon’s Cichlid (Amphilophus lyonsi) – Imperial Tropicals
The Lyon’s cichlid (Amphilophus lyonsi) is a highly sought-after species among Central American cichlid enthusiasts. Known for being less aggressive than other cichlids in its genus, it is a more manageable choice for home aquariums. It grows to a smaller size, making it ideal for medium-sized tanks.
Mature and settled individuals display vibrant coloration, including yellow, orange, red, and pink hues, with red eyes and iridescent blue scales. The striking appearance, combined with its rarity, makes it a prized addition to any cichlid collection.
Originally described as Cichlasoma lyonsi in 1966 by Gosse, this species is now recognized as endangered and is protected under conservation lists.
Specifications
| Feature | Detail |
|---|---|
| Scientific Name | Amphilophus lyonsi |
| Size (adult) | Up to 8 inches |
| Aggression Level | Low to moderate |
| Coloration | Vibrant yellow, orange, red, pink; red eyes; iridescent blue scales |
| Status | Endangered |
FAQ
What makes the Lyon’s cichlid a popular choice among cichlid keepers?
Lyon’s cichlids are less aggressive than many of their relatives, grow to a smaller size, and display vibrant, colorful patterns including red eyes and iridescent blue scales. Their rarity and unique appearance also make them highly desirable.
Is the Lyon’s cichlid suitable for a home aquarium?
Yes, due to its relatively calm temperament and smaller adult size, it is well-suited for home aquariums, especially in a well-maintained tank with appropriate tank mates and conditions.
Are there any conservation concerns with keeping Lyon’s cichlids?
Yes, the Lyon’s cichlid is listed as an endangered species. Responsible breeding and avoiding wild collection are essential to support conservation efforts.

Dylan Miller –
I’ve kept a Lyon’s cichlid for over a year now. It’s much calmer than other cichlids I’ve had before. The colors are stunning, especially when the light hits the scales. I’ve noticed it’s very active during the day but doesn’t stress other fish. A beautiful addition to my tank.
Audrey May –
The fish arrived healthy and looked vibrant. It’s not the largest cichlid, but its coloration is impressive. I’m happy with the size and temperament. I’ve kept it in a 55-gallon tank with a few peaceful community fish. It’s settled well and seems content.
Felicity Manning –
This cichlid is a true standout. The red eyes and iridescent blue scales are breathtaking. It’s not aggressive and doesn’t chase other fish. I appreciate that it’s a rare species and I’m proud to have a protected one in my home.