Leopard Pleco
Pseudacanthicus spinosus
A thorny, wild-looking Amazon pleco with serious attitude to match.

About
The Leopard Pleco (Pseudacanthicus spinosus) is one of those fish that looks like it was designed to survive anything. Native to the Amazon River basin in South America, this species belongs to a genus known for heavy armoring and sharp, pronounced spines along the body and fins. Hence the 'spinosus' name. The patterning varies but typically involves a dark base color scattered with lighter spots, giving it the leopard reference in its common name. In the aquarium, this pleco develops a real personality over time, becoming bolder as it settles in. It can be territorial with other bottom-dwellers and similarly shaped fish, so tank mates need some thought. Despite its somewhat aggressive reputation, it's not unmanageable. Intermediate keepers who've worked with larger plecos before should find it rewarding. Being an omnivore, it appreciates a varied diet and won't thrive on algae wafers alone. Meaty foods, vegetables, and sinking prepared foods should all be part of the rotation. With a lifespan reaching into the double digits, this is a long-term commitment, and the fish will reward patient keepers who give it space, good water quality, and the right company.
Similar species
Other fish you might consider
Good tank mates
Species that tend to coexist peacefully with Leopard Pleco
From the same region
Share the same natural habitat. Great for a biotope-themed tank
Frequently asked questions
- How big does the Leopard Pleco get?
- The Leopard Pleco reaches about 6–10" as an adult.
- What size tank does the Leopard Pleco need?
- A minimum of 25 gallons is recommended for the Leopard Pleco.
- What water parameters does the Leopard Pleco need?
- The Leopard Pleco does best with a temperature of 68–82°F, a pH of 5.8–7.8, hardness around 6–16 dGH.
- Is the Leopard Pleco aggressive?
- The Leopard Pleco is semi-aggressive. It can work in a community with careful tankmate choices and enough space.
- What does the Leopard Pleco eat?
- The Leopard Pleco is an omnivore. It does well on a varied diet of quality flake or pellet plus occasional frozen or live foods.
- How long does the Leopard Pleco live?
- With good care, the Leopard Pleco typically lives 8-12 years.