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Guppy vs Yellowfin Tuna

Poecilia reticulata compared with Thunnus albacares

Taxonomy & Classification

Attribute Guppy Yellowfin Tuna
Scientific Name Poecilia reticulata Thunnus albacares
Order Cyprinodontiformes Scombriformes
Family Poeciliidae Scombridae
Conservation Status Least Concern Least Concern

Physical Traits

Attribute Guppy Yellowfin Tuna
Max Length 6.0 cm 239.0 cm
Max Weight 0.002 kg 200.0 kg
Color 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. Dark metallic blue-black back contrasting with a silver-white belly; a golden-yellow lateral band runs mid-body; dorsal, anal, and finlets are bright canary yellow with black edges.

Habitat & Environment

Attribute Guppy Yellowfin Tuna
Water Type Brackish Saltwater
Depth Range — 1-1602m
Geographic Range 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 … Pantropical, ranging across the Atlantic, Indian, and Pacific oceans between roughly 40°N and 35°S. Aggregates around seamounts, fish aggregating devices, and thermocline boundaries in pelagic …
Habitat 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. Pelagic, estuaries

Aquarium Suitability

Attribute Guppy Yellowfin Tuna
Min Tank Size 38 L —
Temperature 22-28 —
pH Range 6.8-7.8 —
Care Level Easy —
Temperament Peaceful —

Fishing Information

Attribute Guppy Yellowfin Tuna
Game Fish No Yes
Fight Rating — 9/10
World Record — —
Mercury Level — —

Cuisine & Edibility

Guppy

Not consumed — a tiny ornamental livebearer prized by hobbyists for its dazzling color variations and ease of breeding in the aquarium.

Yellowfin Tuna

Lean, dense flesh with a clean, meaty flavor; prized for sashimi and poke. Excellent seared rare, grilled as steaks, or served raw; one of the most commercially valued tunas.

Species Overview

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.

Yellowfin Tuna

The yellowfin tuna is a pelagic predator found in tropical and subtropical oceans worldwide. Capable of speeds exceeding 75 km/h, it is prized both as a sport fish and for its high-quality sashimi-grade flesh.

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