Groupers some of the largest species available to aquarium enthusiasts

Groupers are very robust fish that are found near rocky bottoms and coral reefs throughout the world. Most Groupers will reach a size of 1 to 2 feet but the largest member of the family, the Goliath grouper, can grow to over 8 feet and weigh 1,000 pounds!

In general, they are solitary fish only coming together during spawning season. They will usually hide in caves or use their camouflage to ambush their prey, quickly sucking fishes, lobsters, crabs, octopus, and other invertebrates into their huge mouths.

Groupers require a very large aquarium with lots of rockwork and several caves for hiding. Although they are quite hardy and can tolerate less than optimum water quality, an efficient filtration system along with frequent water changes is required to deal with the large amounts of food consumed and waste produced.

grouper tank fish

Picture Shown a beautiful Phanter Grouper – Cromileptes altivelis.

These saltwater fish should be fed a varied diet of fresh and prepared meaty foods such as fish, shrimp, squid, clams, etc. It is best to keep one Grouper per tank and it definitely should not be housed with other fishes small enough to fit into its cavernous mouth.

Groupers are hermaphrodites, with the ability to change sex from female to male. It is difficult to differentiate between the sexes and even more difficult to breed them in captivity. The fry go through a pelagic larval stage before transforming into the juvenile form.

TankConditions: 79-79°F; sg 1.020-1.025; pH 8.1-8.4; dKH 8-12
Compatibility: Foxface and rabbitfish, lions, scorpions, tangs and surgeons, live corals, live rock, sand.

Blue Dot Grouper

Blue-spotted grouper (Cephalopholis argus) at ...

Blue-spotted grouper (Cephalopholis argus) at Bristol Zoo, Bristol, England. (Photo credit: Wikipedia)

Family: Serranidae
Species: Cephalopholis argus
Size: 16 in (40 cm)
Diet: Carnivorous
Temperament: Aggressive

Miniatus Grouper

Moon Grouper

Moon Grouper (Photo credit: BBM Explorer)

Family: Serranidae
Species: Cephalopholis miniatus
Size: 16 in (40 cm)
Diet: Carnivorous
Temperament: Aggressive

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