Aguja azul vs Pez rojo

Makaira nigricans comparado con Carassius auratus

Taxonomy & Classification

Atributo	Aguja azul	Pez rojo
Nombre Científico	Makaira nigricans	Carassius auratus
Orden	Istiophoriformes	Cypriniformes
Familia	Istiophoridae	Cyprinidae
Conservation Status	Vulnerable	Least Concern

Physical Traits

Atributo	Aguja azul	Pez rojo
Longitud Máxima	500,0 cm	45,0 cm
Peso Máximo	636,0 kg	2,0 kg
Color	Deep cobalt-blue back transitioning to silvery-white belly; flanks display 15 or more pale vertical iridescent bars that fade rapidly after death; dorsal fin vivid cobalt.	Brilliant orange to deep golden-yellow body with a metallic sheen across all scales; domesticated forms range from white, yellow, and red to black and calico bicolor combinations.

Habitat & Environment

Atributo	Aguja azul	Pez rojo
Tipo de Agua	Saltwater	Brackish
Rango de Profundidad	0-1000m	0-20m
Distribución Geográfica	Circumglobal in tropical and subtropical Atlantic, Indian, and Pacific oceans. Highly migratory, frequenting open blue-water environments from the Gulf Stream and Caribbean to the equatorial …	Originates from rivers and lakes of eastern China and possibly Korea; domesticated for over 1,000 years. Wild relatives inhabit slow rivers, ponds, and slightly brackish …
Hábitat	Open ocean (epipelagic to mesopelagic, 0-200m) in tropical and subtropical Atlantic, Pacific, and Indian Oceans. Migratory; follows warm currents and thermoclines. Spawns in open oceanic …	Ponds, lakes, slow rivers across East Asia; introduced worldwide. Tolerates wide temperature range (10-30°C) and turbid water. Prefers shallow, vegetated areas with soft substrates. Domestic …

Aquarium Suitability

Atributo	Aguja azul	Pez rojo
Tamaño Mínimo del Acuario	—	150 L
Temperatura	—	10-24
Rango de pH	—	6.0-8.0
Nivel de Cuidado	—	Easy
Temperamento	—	Peaceful

Información de Pesca

Atributo	Aguja azul	Pez rojo
Pez de Pesca Deportiva	Sí	Sí
Clasificación de Pelea	10/10	—
Récord Mundial	—	—
Nivel de Mercurio	—	—

Cuisine & Edibility

Aguja azul

Firm, mildly flavored meat with moderate fat; often used in Hawaii as smoked marlin or grilled steaks. A prized sport catch; consumption is moderate due to Vulnerable status.

Pez rojo

Not consumed — a classic ornamental aquarium and pond fish; its vivid color and hardy nature make it one of the world's most popular decorative species.

Species Overview

Aguja azul

The blue marlin is the pinnacle of big-game fishing. Found in tropical and temperate Atlantic and Indo-Pacific waters, it can exceed 500 kg and is known for spectacular aerial displays when hooked.

The goldfish was one of the first fish to be domesticated, with selective breeding in China dating back over 1,000 years. Despite common misconceptions, goldfish can live 10-15 years with proper care and require far more space than a small bowl.