Jack dempsey

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piranha45 said:
Males grow to 8-10" and females 6-7", depending on how old they are.

Don't house them with small fish, as the small fish are likely to be eaten, especially when the JDs are juveniles.

Dunno how many you got, but you can anticipate that they will start killing each other off as they grow and mature, until only one male and a female or two are left, if you keep them all in the same tank.

Minimum tank size is 55g for a bonded pair of adult JDs or a single male.

They can be sexed, growth rate differentiation aside, by physical characteristics (body color and irridescent speckling pattern): the male fish is the larger specimen in both pics.

a couple questions. how young can they be sexed otherr than a pair????? Can i see some juvinile pix plz if any1 has some?????? I see "Jack Demphsy for sale alot at pets mart and other places and the look like somethings else completly. my friend got some and the turned out to be blur acara(we think). they are black i have some pix but u can't see theorange on there dorsal fins all the way down. its about 1/2 cm thick. in the pix they look more like a demphsy. they have like bars that are slightly darker than the rest of there body. We went through many ideas of what they are but still can't tell. First thought they were jacks, then texas, now blue acara, and im kinda leaning back to jack

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