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They are aggressive at hatching and stay that way for their whole lives. They are VERY AGGRESSIVE when they are breeding.

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Q: At what age does a jack dempsey fish become aggressive?
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What is a Jack dempsey fish?

A Jack Dempsey fish is a popular freshwater aquarium fish known for its striking appearance and aggressive behavior. They are native to Central America and are named after the famous boxer, Jack Dempsey, due to their aggressive nature. These fish require a large tank with plenty of hiding spaces and are best kept with other robust and similarly sized fish.


When was Jack Dempsey - fish - created?

Jack Dempsey - fish - was created in 1903.


What semi-aggressive fish would be good for a tall 40 gallon tank?

Jack Dempsey or Tiger Oscar


Which jack demsey came first the man or the fish?

The Jack Dempsey Fish came after the man Jack Dempsey. The fish was named after him because he was a boxer and the fish are known for fighting.


What is named after Jack dempsey?

A Jack Dempsey is also a fish. http://www.fishlore.com/profile-jackdempsey.htm


Is a jack dempsey fish a carnivore?

Yes.


Cichlasoma octofasciatum is the Latin name for a highly aggressive cichlid named for what highly aggressive boxer?

Jack Dempsey


Fish takes its name from a heavyweight boxer?

Jack Dempsey


Can you put a jack Dempsey and sucker fish together?

That depends upon the species of sucker fish. There are several of them. I would not be putting anything other than similar sized Amazonian Cichlids in with Jack Dempseys. They are not 'Community' fish. A Jack Dempsey tank should be no smaller than 30 gallons for 2 fish.


What type of fish is a cross between jack dempsey and red devil?

flowerhorn


What is a purple fish with big teeth?

Saltwater: redtoothed trigger fish Freshwater: Jack Dempsey cichlid


How large do Jack Dempsey fish grow?

Jack Dempsey fish can grow up to around 10 inches (25 cm) in length when kept in a suitable environment with proper care.