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Cardinal Tetra
The Atlantic Bluefin Tuna (Thunnus thynnus) is a highly migratory, large predatory fish renowned for its size, speed, and commercial value. It plays a crucial role in the marine ecosystem and is a prized catch in fisheries worldwide.
1 5 years
Lifespan
3-5 cm
Length
Least Concern
Conservation Status
N/A km/h
Swimming speed
Omnivorous, Insectivorous
Diet
Local Migration
Migration
Appearance Overview
The Atlantic Bluefin Tuna showcases a torpedo-shaped body, perfect for high-speed swimming.
Coloration
Dark metallic blue above, silvery-white below
Fins
Two dorsal fins; the first is depressible
Body shape
Torpedo-like, streamlined for speed
Length
Commonly up to 6.6 feet (2 meters), max recorded at 10 feet (3 meters)
Weight
Typically around 550 lbs (250 kg), can reach up to 1,500 lbs (680 kg)
Diet
Carnivorous; feeds on smaller fish (like mackerel, herring, and sardines), squid, and crustaceans.
Feeding Behavior
An opportunistic predator, it uses its speed and agility to hunt, often in coordinated schools.
Social Behavior
Highly migratory, forming large schools, especially during spawning season. Exhibits complex social behaviors.
Commercial Relevance
Extremely high value, particularly in the sushi and sashimi markets, making it one of the most expensive fish in the world.
Conservation measures
Subject to international fishing quotas, stock assessments, and conservation efforts by organizations like ICCAT. Some regions have implemented stricter regulations.
Status
Endangered (IUCN)
Threats
Overfishing (driven by high market demand), bycatch in fisheries targeting other species, and habitat degradation.
Habitat Distribution
Depth Range
0-980 meters (0-3,200 feet), though they are often found in shallower waters.
Geographic Range
Primarily found in the Atlantic Ocean, including the Mediterranean Sea.
Preferred Environment
Pelagic, open ocean; prefers temperate waters but can tolerate a wide range of temperatures.
Reproduction and Life Cycle
Breeding Habits
Spawns in warm waters, with major spawning grounds in the Mediterranean Sea and the Gulf of Mexico.
Development Stages
Eggs hatch into larvae, which develop rapidly, feeding on plankton. Juveniles grow quickly, becoming apex predators.
Fecundity
Females are highly fecund, capable of releasing millions of eggs (up to 30 million) per spawning season.
Maturity Age
Reaches sexual maturity at around 4-8 years, though this can vary by population.
Faqs about Cardinal Tetra
How long do Atlantic Bluefin Tuna live?
They can live up to 40 years, although this is becoming less common due to fishing pressure.
How fast can they swim?
Atlantic Bluefin Tuna are among the fastest fish, capable of swimming at speeds up to 43 mph (70 km/h).
Is it sustainable to eat Atlantic Bluefin Tuna?
Yes, but it's heavily regulated. Consumers are advised to check sustainability ratings and source information.
What is special about their physiology?
They have a unique ability to maintain a body temperature higher than the surrounding water, which helps with their speed and endurance.
Which organizations are involved in their conservation?
ICCAT (International Commission for the Conservation of Atlantic Tunas) is a key organization, along with national fisheries management bodies.
Where do they migrate?
They migrate across the Atlantic Ocean, with some populations spawning in the Mediterranean Sea and the Gulf of Mexico.
Are they warm-blooded?
They are warm-blooded, unlike most fish, which allows them to thrive in a wide range of water temperatures.
How are they adapted for their environment?
Their streamlined body and powerful muscles allow for incredible speed and endurance in the water.
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