Carp conditions

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GobyMaster11276

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Long story short, I have ended up with 3 rescue carp (fingerling?) from a friend. However, there are some physical characteristics I am unsure of. First, all three have a black spot on their abdomen, on just one side. Is this merely an aesthetic feature, or something more malicious? They also have strange shapes, which I think may be due to stunted growth, however since I have never seen such before, am unsure. It can be seen in the photos attached, with the lump near the dorsal fin. In one of the fish (unphotographed), this is particularly prominent. Views from above also show some lumpy sort of body shape on the sides, but there seems to be no other noticeable symptoms. Are these things I should be concerned about? If so, how do I deal with them?
 

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decent pictures of the fish?

the fish in the picture look like female Gambusia, the black are baby fish developing inside their mother
the big carp make a yummy snack out of mosquitofish! i think all your "carp " are just female gambusia or guppies endlers whatever i cannot tell ferom the female. the gambusia should be in normal water temp like golfish/car. trhe lumpy is probably one of them are pregnant. livebearers get pregnant fast. they also wont grow up big
 
decent pictures of the fish?

the fish in the picture look like female Gambusia, the black are baby fish developing inside their mother
Sorry about the quality; I only have my phone to take the photos and they aren’t the most co-operative subjects— I have ventures to get better ones, so helpful they help. Pictured, you will see the one with the biggest dorsal lump, so you can see what I mean.

The three fish all have the black spot on them, so I’m not sure how they could have ended up with babies :eek:
 

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The lump on the back is probably a genetic deformity and nothing to worry about unless you want to show the fish in a fish club show.

Female livebearers can breed with males and carry sperm packets around for up to 6 months after breeding. They can use a sperm packet to fertilise a batch of eggs when the conditions are good and there doesn't have to be a male present because the female has the sperm packets in her body.
 

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