Great Barracuda
Sphyraena barracuda
The Great Barracuda is a silver torpedo reaching 2 meters. This lightning-fast, purely visual apex predator requires massive public pools and is lethally dangerous to handle due to its razor-sharp fangs.
Water Temperature
22 - 28 °C
pH Value
8.1 - 8.4
Water type
Freshwater
Tank level
Surface and middle
Adult size
200 cm
Minimum tank volume
>= 500 L
Minimum group
>= 1
GH
15 - 30 dGH
KH
7 - 15 dKH
TDS
295 - 600 ppm
Conductivity
461 - 938 uS/cm
Species description
Geographical Origin and Habitat: Tropical and subtropical oceans worldwide. Juveniles inhabit mangrove roots (brackish or freshwater), while colossal adults patrol ocean reefs and the open sea.
Taxonomy and Morphology: Great Barracuda (Sphyraena barracuda). The alpha predator. Fusiform body designed for lightning acceleration. Protruding lower jaw, armed with uneven, razor-sharp conical fangs that slice prey in two.
Social Behavior: Solitary Hunter (as adult). Juveniles form dense protective schools, but once past 50 cm (20 inches) they become ruthlessly territorial and solitary. They often hover motionless in mid-water, staring at prey before darting at 25 mph.
Coloration and Sexual Dimorphism: Silver torpedo. Dark gray/green back (to blend with the bottom) and white/silver belly (to blend with the illuminated surface). Often shows dark streaks along the flanks.
Care, breeding and tankmates
Aquarium Setup: NOT a home aquarium fish. As an adult it reaches 2 meters (6.5 feet). Requires circular public pools (without sharp corners, otherwise it breaks its snout) of at least 10,000 liters (2,600 Gallons). Very powerful currents.
Diet and Feeding: Pure piscivore. Eats only live or thawed whole fish (sardines, mackerel). Attacks shiny baits (silver reflections). Must be fed with long tongs to avoid losing fingers.
Water Quality: Sensitive to hypoxia. Given its muscular bulk, it consumes enormous amounts of oxygen. Filtration must be monumental (Giant Skimmers) to cope with the organic load of digested whole fish.
Compatibility and Cohabitation: Eats anyone. Can slice in two or swallow huge fish. In colossal tanks, it can only coexist with benthic sharks, giant groupers or rays, but the risks of mutual mutilation are always high.
Aquarium Breeding: Completely impossible in captivity. They reproduce in the open ocean, releasing massive amounts of eggs that are dispersed by currents.
Risks and Diseases: The Murderous Attack (Broken glass and severed fingers). Extremely nervous fish. A sudden flash of light or an abrupt movement outside the tank makes it dart forward like a bullet, destroying thin acrylic or glass and killing itself. Its teeth cut bone.
Geographic Origin and Distribution
Tropical and subtropical oceans worldwide. Juveniles inhabit mangrove roots (brackish or freshwater), while colossal adults patrol ocean reefs and the open sea.
Origin
Cosmopolitan or introducedTropical oceans and reefs
Fish profile
- Temperament
- Semi-aggressive
- Behaviorally, the Great Barracuda is characterized as being highly predatory and aggressive. They exhibit fascinating social dynamics that can be a true joy to observe in a well-planned display. While generally agreeable, unexpected aggression can sometimes occur if their fundamental environmental needs are not met. Providing adequate hiding spots and sufficient swimming space will go a long way in ensuring their temperament remains calm and manageable.
- Diet
- Omnivore
- Feeding the Great Barracuda properly requires acknowledging its natural role as a piscivorous. A staple diet of premium flakes or pellets should be supplemented with nutrient-rich treats to replicate natural foraging. It is advisable to soak dry foods beforehand to prevent digestive issues and swim bladder complications. Consistently offering a diverse menu will significantly boost their immune system and overall vitality.
- Life expectancy
- 11-18 years
- In the wild, the Great Barracuda has a life expectancy that generally averages around 14 years, reaching in rare cases between 11 and 18 years. Its survival is conditioned by the availability of prey and the presence of larger predators in the early stages of life. It is not a species suitable for home aquariums, and its longevity in captivity is limited to large public facilities.
- Adult size
- 200 cm
- The catalog's scalar value is 200 cm. The FishBase SPECIES table (v25.04 snapshot) source reports a maximum adult measurement of 200 cm for this species, recorded as total length (TL). The taxonomic record consulted is Sphyraena barracuda (v25.04); male or unsexed record. These figures are not interchangeable: the first is the profile's editorial reference, whereas the second is a published maximum under a specific measurement convention; differences among sources can reflect sex, population, life stage and measuring method.
- Sex ratio
- Specific M:F ratio
- To prevent undue stress, it is recommended to keep the Great Barracuda in a carefully managed sex ratio. Providing more females than males reduces the constant harassment that a single female might endure. If keeping multiple males, the aquarium must be sufficiently large to allow for the establishment of distinct territories. Careful observation during the first few weeks will dictate if any aggressive individuals need to be rehomed.
- Feeding frequency
- Twice daily
- To mimic its natural foraging behavior, the Great Barracuda should be fed small portions two to three times a day. Overfeeding can lead to severe health issues and quickly degrade the water quality. It is crucial to only provide an amount of food that the fish can consume within a few minutes. Adjusting the feeding frequency based on the fish's age and activity level is a best practice for long-term care.
- Bioload
- Maintaining this marine species requires understanding its extremely high bioload profile. The Great Barracuda will thrive when the filtration system is carefully matched to its specific waste production. Frequent testing of the water chemistry is highly recommended to ensure no dangerous spikes occur. Excellent water quality is the foundation for preventing disease and promoting a vibrant, active fish.
- Flow
- Stagnant
- Providing a strong current is highly recommended for the overall well-being of the Great Barracuda. Adequate water circulation not only mimics their natural ecosystem but also ensures high dissolved oxygen levels throughout the aquarium. Hobbyists should avoid creating localized dead spots where debris might accumulate. Adjusting the filtration output angle can help achieve the perfect balance between steady circulation and calm resting areas.
- Reproduction
- Oviparous
- The reproductive strategy of the Great Barracuda involves being a pelagic spawner. Breeding this species in captivity can be a rewarding challenge that requires dedicated conditioning of the broodstock. Specific triggers such as changes in temperature, diet, or water chemistry are often necessary to induce spawning. Once breeding occurs, specialized care for the fry, including appropriately sized live foods, is critical for their survival and development.
- Compatibility & tankmates
- The Great Barracuda is known to be only with very large robust fish, not reef safe when integrated into a carefully planned setup. They tend to exhibit the best colors and natural behaviors when kept with species of a similar temperament. Aquarists must be cautious to provide enough visual barriers if housing them with semi-aggressive tankmates. Overall, a well-thought-out stocking plan will yield a beautiful, drama-free aquatic display.
- Tank level
- Top/Middle
- The Great Barracuda naturally gravitates towards the top to mid section of the water column. Decorating this specific zone with appropriate hardscape, such as driftwood branches or rocky caves, encourages them to display their natural behaviors. It is important to ensure that water flow and lighting are optimized for this specific depth. Layering the tank inhabitants thoughtfully creates a visually dynamic and biologically sound ecosystem.
Scientific Parameters & Models
FishBase
Window to the official scientific data of the species
Data synced on: 06/15/2026
- Trophic level
- 4.5 ± 0.6 se
- Resilience
- Low (4.5 - 14 years)
- Phylogenetic uniqueness (PD50)
- 0.5
- Bayesian Length-Weight
- a = 0.00851, b = 2.93
- VulnerabilityVery high vulnerability (79 / 100)
Image gallery
Licensed images linked to the species or, when marked, to the closest representative taxon.
Related species
Recommendations grouped by close relatives, companion choices, and similar care.
