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how to tell jack dempsey frys from green terrors?
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Oscar916
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Joined: 15 Mar 2005

PostPosted: 2005.03.28(Mon)19:55    Post subject: how to tell jack dempsey frys from green terrors? Reply with quote

Hi guys.. I told you guys that I bought 2 1" babies from petsmart. They had green terrors and jack dempsey frys in the same tank. I told them to give me one of each. At first I figured that the dark one was the jack demsey and the greyish one was the green terror but these guy can change their color with their mood and sometimes they look exactly alike!! how do I tell the fry apart or how do I know which species they are? do you guys have any fry pics? Question Question Question
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Ken
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Joined: 24 Jun 2003
Location: Union City, CA

PostPosted: 2005.03.29(Tue)10:22    Post subject: Reply with quote

With experiance, these two fish will look as different to you as night and day, but a couple of easy to see differences are: the Jack dempsey will have a red (not orange) edge along his dorsal fin, possibly a couple of broad vertical dark lines along his sides and blue "spangling" on at least his face, if not his whole body.

The Green Terror will have orange (or rarely white) along the top of his dorsal fin AND at the edge of his dorsal (tail) fin. The Terror will have green/blue lines (not spangling) on his face, and when healthy and happy, a single black spot on his sides.

Be prepared for both of these fish to grow fairly large and for one of them to probably kill the other when they get to be about three or four inches long.

My money is on the Green Terror.
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@-McP
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Joined: 24 Jul 2004

PostPosted: 2005.03.29(Tue)10:28    Post subject: Reply with quote

Ken I agree that they will kill each other. Although not before the shelldweller that is in with them. That is assuming the oscar doesn't get them first. If its left to the 2 of them I don't know...I've heard a JD got easily tear up a Green Terror. I think it will depend on the individual fish. Keep us posted on how long these fish will co habitate before killing each other...you sure proved everyone wrong.. Rolling Eyes

Last edited by @-McP on 2005.04.01(Fri)15:15; edited 1 time in total
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Oscar916
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Joined: 15 Mar 2005

PostPosted: 2005.03.30(Wed)23:51    Post subject: Reply with quote

Ken wrote:
the Jack dempsey will have a red (not orange) edge along his dorsal fin, possibly a couple of broad vertical dark lines along his sides and blue "spangling" on at least his face, if not his whole body.
The Green Terror will have orange (or rarely white) along the top of his dorsal fin AND at the edge of his dorsal (tail) fin. The Terror will have green/blue lines (not spangling) on his face, and when healthy and happy, a single black spot on his sides.


OK I do notice the dark verticle lines on both.. and one of them has sort of pinkish outline on its dorsal fin.. and both has green glitters around their face.. And both have a single black spot on their sides. Lol now it fits the criteria for both species Laughing

also you guys, just to let you know I observe my fish tank regularly every single day.. A lot of times a day.. I'd know to separate the fish if I notice any signs of aggression. Havnet noticed Any yet but the most innocent looking electric yellow sometimes bullies the JD and GT babies but thats all.
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Ken
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Joined: 24 Jun 2003
Location: Union City, CA

PostPosted: 2005.03.31(Thu)16:11    Post subject: Reply with quote

I would have to guess then, that you don't have any green terrors at all then, and they are probably both Jack Dempsey's. Jack Dempsey's can look wildly different from one another, while Green Terrors generally share the same basic look.

Take a look at the Green Terrors in the Gallery and pay close attention to the facial markings, these markings generally look the same from the time the baby is half an inch long until it is fully grown. Once again... Lines, not spots.

Ken
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Oscar916
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PostPosted: 2005.03.31(Thu)22:51    Post subject: Reply with quote

thanks. I'm almost pretty sure they're both JD. I guess I'll be sure when they grow a lil bigger though Very Happy
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Oscar916
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PostPosted: 2005.05.09(Mon)19:47    Post subject: Reply with quote

Hi guys, the fry are a little bigger now and now one of them has permanently tuned dark grey with black bands. and the other one is still always a light silverish, it doesn't turn dark. After my research I have come to a conclusion that both of these little guys are JD fry. But why are they both different colors, is that the diff between the males and females? Because during feeding time when I turn on the tank light, I notice that the darker one usually swims around the lighter one, and the behavior seems like its trying to attract the lighter one. But they're both still 1".. isn't that too young to be mating? Confused
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elTwitcho
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Joined: 15 Feb 2005

PostPosted: 2005.05.09(Mon)19:52    Post subject: Reply with quote

Color can be strange in some cichlids. My green terror for instance (pic attached) is a much lighter skin tone than a lot of other terrors who have a dark bluish skin tone, and the same seems to happen with a lot of Jack Dempseys. Some have dark blueish skin tone, and others have light beige coloration, and it has nothing to do with male or female, it's just different color morphs.


There's my terror, you can see that his skin coloration is much lighter
than the green terror in the profile here (http://www.aquahobby.com/gallery/e_terror.php) yet both are males. Mine also has different tail banding (white saum) which is another variation in color among the same sex and species.
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Oscar916
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PostPosted: 2005.05.11(Wed)22:58    Post subject: Reply with quote

^ wow thats really pretty. I thought all green terrors were silver. But I love this shade...
See the only reason I thought mine are a pair is because of how one seems to perform this "dance" infront of the other and follows it everywhere.. I've had tiger barbs that used to display same sort of behavior and I had found out they were a pair later on. So I was thinking this is the same case here.
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Psyfalcon
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Joined: 14 Feb 2003
Location: New Jersey

PostPosted: 2005.05.11(Wed)23:14    Post subject: Reply with quote

1 inch is probably too small for mating, but may not be too small for pairing. They may pair, and then beat the snot out of each other until they are ready to breed.

If you can get any pictures, it will be a breeze to ID them for you. Smile
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