Saltwater Fish are fish that are found in the oceans or marine environments. Saltwater fish are categorized based on the marine environment they live in. Attributes that define a marine environment for a saltwater fish are, the temperature of the water, the depth or flow of the water, the water’s PH, the amount of salt in the water, the alkalinity of the water, and the location of the water including coastal environments to coral reefs and open oceans. Saltwater Fish can either live alone or in big groups of fish, called schools. Saltwater Fish can be hunted for food or to keep in captivity, such as aquariums, for entertainment.

What do saltwater fish eat?


Saltwater fish can carry carnivore, herbivore, or omnivore diets. Herbivore saltwater fish consume both microalgae and macroalgae as well as seagrasses. A carnivore’s diet typically consists of shrimp, plankton, and tiny crustaceans. Some carnivores may eat worms, clams, and parasites. Most carnivore saltwater fish will not eat algae even if they are starving.

Why can’t saltwater fish live in freshwater?

Saltwater fish are not able to live in freshwater because their bodies are concentrated from salt solution. Saltwater fish would not be able to osmoregulate correctly in freshwater. Freshwater would flow into their body up to the point where all cells can accumulate water causing them to bloat and die.

How do you acclimate saltwater fish?

Saltwater fish can be acclimated in a couple of ways. This can be done by modifying the water’s salinity, altering the pH of the water, and using the drip method or the floating method. It is important to acclimate saltwater fish because changes in salinity, water temperature, and water chemistry can cause stresses that shock the fish to death.

Saltwater Fish Guides
Browse through our curated Saltwater Fish Guides for additional categorizations, tips, details, variations, styles, and histories of Saltwater Fish. Guides provide additional insights into the unique properties and shared relationships between elements.
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10”-23” | 25.4-58.4 cm
5.5’-14’ | 1.7-4.3 m
200-1800 lb | 90-816 kg
20-30 years
Atlantic Blue Marlin
58.400
430.000
816.000
30.00
1500
3D
Atlantic Blue Marlin
24”-50” | 61-127 cm
7’-15’ | 2.1-4.6 m
550–2000 lb | 250-907 kg
15-30 years
Atlantic Bluefin Tuna
127.000
460.000
907.000
30.00
4300
3D
Atlantic Bluefin Tuna
13”-20” | 33-50.8 cm
7.5’-11’ | 2.3-3.4 m
132-220 lb | 60-100 kg
10-15 years
Atlantic Sailfish
50.800
340.000
100.000
15.00
450
3D
Atlantic Sailfish
12”-19” | 30.5-48 cm
5’-8’ | 152-244 cm
60-280 lb | 27-127 kg
30-55 years
Atlantic Tarpon
48.000
244.000
127.000
55.00
700
3D
Atlantic Tarpon
26”-49” | 66-125 cm
6.6-8.8 lb | 3-4 kg
10-15 years
Australian Ghost Shark
125.000
4.000
15.00
550
3D
Australian Ghost Shark
3.5”-6.5” | 8.9-16.5 cm
16”-30” | 40-75 cm
7-20 lb | 3-9 kg
10-20 years
Bonefish
16.500
75.000
9.000
20.00
100
3D
Bonefish
10”-20” | 25.4-50.8 cm
33”-67” | 85-170 cm
33-132 lb | 15-60 kg
10-25 years
Giant Trevally
50.800
170.000
60.000
25.00
4700
3D
Giant Trevally
6.5”-10.5” | 16.5-26.7 cm
33”-55” | 84-140 cm
15-40 lb | 7-18 kg
4-5 years
Mahi-Mahi
26.700
140.000
18.000
5.00
6200
3D
Mahi-Mahi
13”-16.5” | 33-41.9 cm
48”-63” | 122-160 cm
25-80 lb | 11-36 kg
20-35 years
Roosterfish
41.900
160.000
36.000
35.00
3000
3D
Roosterfish
Wahoo
41000
6.5”-12” | 16.5-30.5 cm
40”-72” | 102-183 cm
15-40 lb | 7-18 kg
5-9 years
Wahoo
30.500
183.000
18.000
9.00
41000
3D
Wahoo
10.5”-20.5” | 26.7-52 cm
43”-83” | 110-210 cm
300-400 lb | 136-181 kg
5-10 years
Yellowfin Tuna
52.000
210.000
181.000
10.00
22000
3D
Yellowfin Tuna
Mahi-Mahi | Common Dolphinfish
Dimensioned comparison drawing of the Mahi-Mahi compared to an average person

The Mahi-Mahi (Coryphaena hippurus), also known as the common Dolphinfish, are found in most warm, tropical, and subtropical oceans of the earth. They belong to the family Coryphaenidae with males being larger than females.

Females have round heads while males have prominent protruding foreheads. They have a single long-based fin running along their compressed, slightly slender, long body from the head to the tail. They also have sharply concave caudal and anal fins. The Mahi-Mahi’s side and back show a mix of dazzling green or bright blue colors. The fish also changes color when out of the water and are highly prized as a commercial and sport fish.

Mahi-Mahis have a total length between 33”-55” (84-140 cm), body height of 6.5”-10.5” (16.5-26.7 cm), and an overall weight in the range of 15-40 lb (7-18 kg). The typical lifespan of the Mahi-Mahi is 4-5 years.

Pair of elevation illustrations of the Mahi-Mahi seen from the side and front
The Mahi-Mahi (Coryphaena hippurus), also known as the common Dolphinfish, are found in most warm, tropical, and subtropical oceans of the earth. They belong to the family Coryphaenidae and are a highly prized game fish in commercial and sport fishing.

Mahi-Mahis have a total length between 33”-55” (84-140 cm), body height of 6.5”-10.5” (16.5-26.7 cm), and an overall weight in the range of 15-40 lb (7-18 kg). The typical lifespan of the Mahi-Mahi is 4-5 years.

Pair of elevation illustrations of the Mahi-Mahi seen from the side and front
Mahi-Mahi | Common Dolphinfish
Height:
6.5”-10.5” | 16.5-26.7 cm
Width:
Length:
33”-55” | 84-140 cm
Depth:
Weight:
15-40 lb | 7-18 kg
Area:
Scientific Name
Coryphaena hippurus
Lifespan
4-5 years

Drawings include:

Mahi-Mahi side elevation, front

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Wahoo
Scale illustration of an average Wahoo with dimensions length compared to a human

The Wahoo (Acanthocybium solandri) is found in tropical and subtropical open oceans. They belong to the family Scombridae and highly valued by sport fishermen and commercial fishermen. They are large and aggressive predators that would show different color patterns to confuse prey.

The Wahoo is a solitary fish but could also be found in small schools or only congregated to breed. They are known to be broadcast spawners, fast swimmers, and attracted to floating debris. They are identified by their elongated jaws, slender bodies covered in less visible scales, silver bellies, and top in blue coloring. Their body color fades during death.

Wahoos have a total length between 40”-72” (102-183 cm), body height of 6.5”-12” (16.5-30.5 cm), and an overall weight in the range of 15-40 lb (7-18 kg). The typical lifespan of the Wahoo is 5-9 years.

Pair of elevation illustrations of the Wahoo seen from the side and front
The Wahoo (Acanthocybium solandri) is found in tropical and subtropical open oceans. They belong to the family Scombridae and highly valued by sport fishermen and commercial fishermen. They are large and aggressive predators that would show different color patterns to confuse prey.

Wahoos have a total length between 40”-72” (102-183 cm), body height of 6.5”-12” (16.5-30.5 cm), and an overall weight in the range of 15-40 lb (7-18 kg). The typical lifespan of the Wahoo is 5-9 years.

Pair of elevation illustrations of the Wahoo seen from the side and front
Wahoo
Height:
6.5”-12” | 16.5-30.5 cm
Width:
Length:
40”-72” | 102-183 cm
Depth:
Weight:
15-40 lb | 7-18 kg
Area:
Scientific Name
Acanthocybium solandri
Lifespan
5-9 years

Drawings include:

Wahoo side elevation, front

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Bonefish
Measured comparison illustration of the size of a Bonefish to a typical person

The Bonefish (Albula vulpes) is a solitary traveler and member of the family Albulidae and are also called Banana fish or Ladyfish. They have slender and relatively long bodies with somewhat green backs and yellow pectoral fins. Bonefish exhibit high levels of speed and strength, preference for shallow coastal and island waters of warm seas.

They have a pointed piglike snout that holds their small mouth and deeply notched caudal fin. The bonefish is an important ingredient in fly-fishing for the people of Southern Florida, Bahamas, and Puerto Rico. They love to feed in areas of low tides and protected bays.

Bonefish have a total length between 16”-30” (40-75 cm), body height of 3.5”-6.5” (8.9-16.5 cm), and an overall weight in the range of 7-20 lb (3-9 kg). The typical lifespan of the Bonefish is 10-20 years.

Pair of elevation illustrations of the Bonefish seen from the side and front
The Bonefish (Albula vulpes) is a solitary traveler and member of the family Albulidae. They have slender and relatively long bodies with somewhat green backs and yellow pectoral fins. Bonefish exhibit high levels of speed and strength, preference for shallow coastal and island waters.

Bonefish have a total length between 16”-30” (40-75 cm), body height of 3.5”-6.5” (8.9-16.5 cm), and an overall weight in the range of 7-20 lb (3-9 kg). The typical lifespan of the Bonefish is 10-20 years.

Pair of elevation illustrations of the Bonefish seen from the side and front
Bonefish
Height:
3.5”-6.5” | 8.9-16.5 cm
Width:
Length:
16”-30” | 40-75 cm
Depth:
Weight:
7-20 lb | 3-9 kg
Area:
Scientific Name
Albula vulpes
Lifespan
10-20 years

Drawings include:

Bonefish side elevation, front

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Yellowfin Tuna
Dimensioned comparison drawing of the Yellowfin Tuna compared to an average person

The Yellowfin Tuna (Thunnus albacares) are members of the fish family Scombridae found in the tropical and subtropical oceans worldwide. The Yellowfin Tuna is large and its name comes from the bright yellow coloring of its finlet, second dorsal and anal fin.

They are highly social, always traveling in groups among themselves, with other tuna species, dolphins, and porpoises. Their torpedo-shaped body gives them speed while their back and upper sides are metallic blue and belly yellow or silver. They are differentiated from other tunas by their slender body with a bright yellow dorsal fin. Besides being a popular cuisine, they are also valued by sports fishermen.

Yellowfin Tunas have a total length between 43”-83” (110-210 cm), body height of 10.5”-20.5” (26.7-52 cm), and an overall weight in the range of 300-400 lb (136-181 kg). The typical lifespan of the Yellowfin Tuna is 5-10 years.

Pair of elevation illustrations of the Yellowfin Tuna seen from the side and front
The Yellowfin Tuna (Thunnus albacares) are members of the fish family Scombridae found in the tropical and subtropical oceans worldwide. The Yellowfin Tuna is large and its name comes from the bright yellow coloring of its finlet, second dorsal and anal fin. They are highly social fish.

Yellowfin Tunas have a total length between 43”-83” (110-210 cm), body height of 10.5”-20.5” (26.7-52 cm), and an overall weight in the range of 300-400 lb (136-181 kg). The typical lifespan of the Yellowfin Tuna is 5-10 years.

Pair of elevation illustrations of the Yellowfin Tuna seen from the side and front
Yellowfin Tuna
Height:
10.5”-20.5” | 26.7-52 cm
Width:
Length:
43”-83” | 110-210 cm
Depth:
Weight:
300-400 lb | 136-181 kg
Area:
Scientific Name
Thunnus albacares
Lifespan
5-10 years

Drawings include:

Yellowfin Tuna side elevation, front

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Atlantic Bluefin Tuna
Measured comparison illustration of the size of a Atlantic Bluefin Tuna to a typical person

Atlantic Bluefin tuna (Thunnus thynnus) are members of the family Scombridae and found in the warm waters of North America, Europe, and the Mediterranean sea. They are deep divers utilizing their torpedo-shaped bodies for speed and endurance.

The Bluefin Tuna is a warm-blooded animal with a conical head, sharpest vision, and voracious appetite. They also migrate and are identified by their white underside and metallic blue on top of their bodies, which also conceals them from above and below the water. Sport fishermen and commercial fishers love the bluefin tuna for its meat, speed, and fighting spirit.

Atlantic Bluefin Tunas have a total length between 7’-15’ (2.1-4.6 m), body height of 24”-50” (61-127 cm), and an overall weight in the range of 550–2000 lb (250-907 kg). The typical lifespan of the Atlantic Bluefin Tuna is 15-30 years.

Scaled collection of drawings of Atlantic Bluefin Tuna in front and side poses
Atlantic Bluefin tuna (Thunnus thynnus) are members of the family Scombridae and found in the warm waters of North America, Europe, and the Mediterranean sea. They are deep divers utilizing their torpedo-shaped bodies for speed and endurance.

Atlantic Bluefin Tunas have a total length between 7’-15’ (2.1-4.6 m), body height of 24”-50” (61-127 cm), and an overall weight in the range of 550–2000 lb (250-907 kg). The typical lifespan of the Atlantic Bluefin Tuna is 15-30 years.

Scaled collection of drawings of Atlantic Bluefin Tuna in front and side poses
Atlantic Bluefin Tuna
Height:
24”-50” | 61-127 cm
Width:
Length:
7’-15’ | 2.1-4.6 m
Depth:
Weight:
550–2000 lb | 250-907 kg
Area:
Scientific Name
Thunnus thynnus
Lifespan
15-30 years

Drawings include:

Atlantic Bluefin Tuna side elevation, front

Details & Downloads

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