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Fish Freshwater Care: medium Peaceful

Snow King Pleco

Pterygoplichthys ambrosettii
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Other names: Snow king plec, Pterygoplichthys anisitsi, Liposarcus anisitsi, Sailfin pleco
Group: Plecos and suckermouth catfish · Family: Loricariidae · Origin: South America — Paraná–Paraguay basin

A large sailfin pleco reaching 40–45 cm, whose dark body looks snowy with irregular cream to white patches. Of subtropical origin, it needs cool to temperate water and a very large aquarium or pond.

Will it suit my tank?

Last updated October 16, 2026

Temperature
20–25°C
pH
6.5–7.8
Hardness
4–20 dGH
Adult size
45 cm
Minimum tank size
600 liters
Social structure
Solitary
Swimming zone
Bottom
Diet
Herbivore
Breeding
Substrate spawner

Water parameters

Temperature20–25°C
pH6.5–7.8
General hardness (GH)4–20 dGH
Recommended range
Damages plants Considered shrimp safe

Overview

October 16, 2026 · Suggest an edit

The snow king pleco is a large Pterygoplichthys with a "snowy" look created by irregular light-colored patches on a dark background. In the trade and in older sources it mostly appears under the name P. anisitsi or Liposarcus anisitsi; this name is now considered a synonym of P. ambrosettii.

Adults can reach 40 cm standard length and 45 cm or more including the tail. Because it comes from cooler waters in the south, tropical aquariums kept constantly at 27–28°C do not suit it.

Tank Setup

October 16, 2026 · Suggest an edit
  • At least 600 liters and 200 cm length for one adult; a pond is also suitable.
  • 21–24°C, a very powerful filter and frequent water changes.
  • Large roots and sturdy caves; it uproots and eats plants.

Diet

October 16, 2026 · Suggest an edit

An omnivore leaning toward a herbivorous diet. Make algae and vegetable tablets, blanched zucchini, potato, cucumber and spinach the staple; frozen food can be given occasionally.

Behavior and Compatibility

October 16, 2026 · Suggest an edit

Peaceful toward other species; as it grows it becomes territorial toward its own kind and other large bottom dwellers.

Good companions: Large fish that like cool to temperate water: large barbs, subtropical cichlids, large rainbowfish (in a very large aquarium).

Avoid: Small aquariums, warm-water species such as discus, slow, flat-bodied fish, planted layouts.

A short profile for this species

The Snow King Pleco page has the basics, but the sections below have not been written yet. If you keep this species, write a section from your own experience; it will be published under your name after editor approval.

Tank mates

This list is calculated automatically from the species profile and grows as new species are added to the catalog. Try it in the planner for a definite answer.

Usually compatible

Should not be kept together

Hobbyist notes

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Change history and contributors
  1. Page created · October 16, 2026