Brown Trout vs Guppy
Salmo trutta compared with Poecilia reticulata
Taxonomy & Classification
| Attribute | Brown Trout | Guppy |
|---|---|---|
| Scientific Name | Salmo trutta | Poecilia reticulata |
| Order | Salmoniformes | Cyprinodontiformes |
| Family | Salmonidae | Poeciliidae |
| Conservation Status | Least Concern | Least Concern |
Physical Traits
| Attribute | Brown Trout | Guppy |
|---|---|---|
| Max Length | 140.0 cm | 6.0 cm |
| Max Weight | 20.0 kg | 0.002 kg |
| Color | Golden-brown to amber flanks scattered with large black and orange-red spots, each often encircled by a pale halo; belly golden-yellow; adipose fin is orange-tinged; sea-run form is silvery. | Males display highly variable iridescent patterns on a gray-olive body; spots, reticulations, and solid patches of red, orange, blue, green, and black; flowing fantail fins often multicolored. |
Habitat & Environment
| Attribute | Brown Trout | Guppy |
|---|---|---|
| Water Type | Freshwater & Saltwater | Brackish |
| Depth Range | 0-28m | — |
| Geographic Range | Native to Europe and western Asia from Iceland and the British Isles east through Scandinavia, the Alps, and the Caucasus. Anadromous sea trout migrate between … | Native to freshwater and slightly brackish streams of northern South America including Venezuela, Trinidad, and Barbados. Tolerates a wide range of salinities; introduced on every … |
| Habitat | Rivers, streams, and lakes across Europe, western Asia, and North Africa; widely introduced. Inhabits clear, cold to temperate rivers (8-18°C) over gravel and rock. Anadromous … | Slow-moving rivers, streams, ponds, and drainage ditches of northern South America (Venezuela, Trinidad). Warm, shallow water with dense vegetation (22-28°C). Highly adaptable; introduced worldwide. |
Aquarium Suitability
| Attribute | Brown Trout | Guppy |
|---|---|---|
| Min Tank Size | — | 38 L |
| Temperature | — | 22-28 |
| pH Range | — | 6.8-7.8 |
| Care Level | — | Easy |
| Temperament | — | Peaceful |
Fishing Information
| Attribute | Brown Trout | Guppy |
|---|---|---|
| Game Fish | Yes | No |
| Fight Rating | 6/10 | — |
| World Record | — | — |
| Mercury Level | — | — |
Cuisine & Edibility
Brown Trout
Firm, flavorful flesh ranging from cream to pink; moderately fatty with a richer taste than rainbow trout. Excellent pan-fried, baked, or smoked; highly regarded as a European table fish.
Guppy
Not consumed — a tiny ornamental livebearer prized by hobbyists for its dazzling color variations and ease of breeding in the aquarium.
Species Overview
Brown Trout
The brown trout is native to European rivers and has been introduced worldwide. Renowned for its wariness and intelligence, it is the ultimate quarry for fly fishers. Larger specimens become nocturnal, feeding primarily on smaller fish.
Guppy
The guppy is one of the most widely distributed tropical fish, found in freshwater habitats across the Americas. Males display vivid colors and elaborate tail patterns to attract females. They are live-bearers, giving birth to free-swimming fry.