Angelfish vs Plecostomus
Pterophyllum scalare compared with Hypostomus plecostomus
Taxonomy & Classification
| Attribute | Angelfish | Plecostomus |
|---|---|---|
| Scientific Name | Pterophyllum scalare | Hypostomus plecostomus |
| Order | Cichliformes | Siluriformes |
| Family | Cichlidae | Loricariidae |
| Conservation Status | Least Concern | Least Concern |
Physical Traits
| Attribute | Angelfish | Plecostomus |
|---|---|---|
| Max Length | 15.0 cm | 50.0 cm |
| Max Weight | 0.03 kg | 1.0 kg |
| Color | Silver to pale gold body with four bold black vertical bars including one through the eye; tall triangular dorsal and ventral fins are translucent silver; domesticated forms include gold, black, and marbled variants. | Dark brown to grayish-black body densely covered with pale yellowish or cream spots and flecks creating a mottled leopard-like pattern; armor-plated scutes visible; belly is pale tan to cream. |
Habitat & Environment
| Attribute | Angelfish | Plecostomus |
|---|---|---|
| Water Type | Freshwater | Brackish |
| Depth Range | — | — |
| Geographic Range | Native to the Amazon River basin and associated river systems in Peru, Colombia, and Brazil. Inhabits densely vegetated floodplain swamps, flooded igapó forests, and slow … | Native to rivers and coastal streams of northeastern South America, from Guyana and Suriname through northern Brazil. Found in rocky river bottoms and estuarine margins; … |
| Habitat | Slow-moving rivers and flooded forests of the Amazon basin, particularly white-water and clear-water rivers. Warm water (24-30°C); inhabits areas with submerged vegetation and driftwood. | Rivers of the Amazon basin, especially the Rio Tapajós and Rio Orinoco. Inhabits clear-water rivers over gravel and rocks; also near submerged wood. Grazes algae … |
Aquarium Suitability
| Attribute | Angelfish | Plecostomus |
|---|---|---|
| Min Tank Size | 190 L | 280 L |
| Temperature | 24-28 | 22-28 |
| pH Range | 6.0-7.5 | 6.5-8.0 |
| Care Level | Moderate | Easy |
| Temperament | Semi-Aggressive | Peaceful |
Cuisine & Edibility
Angelfish
Not consumed — a graceful ornamental cichlid valued for its triangular body shape and striking vertical banding; widely kept in freshwater community tanks.
Plecostomus
Not consumed — ornamental algae-eating catfish kept as a natural tank cleaner; widely popular in freshwater aquariums for its armored body and bottom-dwelling habits.
Species Overview
Angelfish
The freshwater angelfish is a majestic cichlid with a laterally compressed body and long, flowing dorsal and anal fins. Native to the Amazon basin, it has been selectively bred into numerous color varieties including marble, koi, and platinum.
Plecostomus
The common pleco is a large armored catfish native to South America. Often purchased as an algae eater, it can outgrow most home aquariums. Its sucker-like mouth allows it to rasp algae from surfaces and anchor itself in fast-flowing currents.