goldfish fins gone black?

Question

Hi, I have a yellow dahl (?) and the undeside of all his fins have gone black. There is no obvious damage and he is otherwise fine, thought fin rot was pale or bloody ? He is only a month or so old, could it just be his markings coming out ?

Answer 1

Although goldfish are prone to changing color black tips on fins isn't usually one of them. I am sorry I breed gold fish and I have never heard of a yellow dahl goldfish. Perhaps a crucian carp carrying a mutation for yellow coloring?

When a fish's fins begin to turn black there is something wrong. Ammonia is usually the culprit. Have you tested your water?

Also, the begining stages of fin rot could be the other. I would test the water to be sure your ammonia levels are below .5. I would watch him for the next few days to see if the darkening gets worse or starts to look frayed.

If this happens, feel free to im or email me or repost.

Answer 2

Pet fish are usually hardy but can contract diseases. These can be caused by unclean water, overfeeding and overcrowding. In small aquariums, illnesses in pet fish can quickly become fatal, meaning prompt treatment is important. Several symptoms can indicate sick fish: cuts on any of the fins, a change in scale or eye colour, excretions from the nostrils, scales falling off or the fish frequently making trips to the surface. Many treatments can be bought to treat specific diseases, but the best treatment is prevention.

so unless you have those circumstances then i suppose that your fishes markings are coming out and is not dieing

but if u do have those circumstances then ur fish probably has tail & fin rot.

Fin rot is a symptom of disease in fish; it is not hard to treat, and the fish usually will survive. Fin rot can occur as a result of an injury, as a secondary infection once the fish has been weakened by another disease, or in some cases, as a primary infection (bacterial).

Fin rot can be the result of a bacterial infection (which causes a more ragged rotting), or as a fungal infection (which rots the tail more evenly and is more likely to produce a white/ black 'edge'). Sometimes, both types of infection are seen together. Infection is commonly brought on by bad water conditions, injury, poor diet, the wrong temprerature of the water for the type of fish.

Fin rot starts at the edge of the fins, and destroys more and more tissue until it reaches the fin base. If it does reach the fin base, the fish will never be able to regenerate the lost tissue. At this point, the disease may attack the fish's body directly.


Treatments for fin rot
Fungus: For fish large enough to handle, catch the fish, and dab malachite green directly on the fungus with a cotton swab. This is extremely effective. Repeat treatments may be necessary.

Bacterial: Antibiotic treatment in a quarantine tank. This is stressful for the fish, and doesn't always work, so be sure of what you are doing before you attempt it. If the fish is still eating, the best bet is an antibiotic food.


Fin rot prevention
With very few exceptions, virtually all cases are precipitated by stress, fear or poor environmental conditions.

if your fish does have fin rot talk to a vet or a pet store employee.

Answer 3

The fins turning black is not a problem. It could be, if you have a young fish they change color several times before they become adults. Sometimes if the ph is different from where it was before can make this happen. Or if the fish was in poor water and was moved to cleaner water, this is the scarring left over. Generally black on the fins is a sign of healing, so its a good thing, even if it looks bad. It means the trauma is over and healing has begun. It should fade to normal in a week or two. If its color change, black won't stay long and the fish will grow out of it. I have seen common goldfish turn from silver, to black, then to bright orange gold in just a few months.
The behavior of your goldfish will tell you if he's having a problem. Healthy goldfish are brightly colored, fins up and out, they are busy pecking around doing this and that, alert, eat well, and beg for food anytime you come near the tank. Stressed behaviors are bottom sitting, floating, fin clamping, twitching, scratching, rolling, breathing heavily, hanging out by the filter outflow or airstone, white spots, fuzzy spots, cloudy eyes, not eating, curling, drifting, piping air constantly, yawning, fin flicking, dull washed out colors, no flight response, hiding, aggression, too skinny or too fat, soft belly, lack of slime coat, too much slime coat (you can see it trailing off of the fish), gills held open, sores, ragged fins, missing scales, bloated with scales standing out, eyes protruding, eyes sunken, just to name a few off the top of my head. If your fish is behaving in a healthy way, no worries. If the fish is doing any stressed things above then its time to stop feeding and start changing water. I think your fish is fine. Blackened fins are usually not a cause for concern.

Answer 4

I think you're referring to the Siamese doll goldfish? This is the albino form of the black moor?

The fins in these should be a pale gold color, like the body. This could be a color change in a poor strain, or it could be that the fins are healing from an ammonia burn. Is he kept in a bowl or small tank? If he doesn't have an adequate filter or frequent water changes (especially if the tank is new) ammonia could have been building up. The black on the fins is a sign of healing.

Answer 5

first of all you do not desire a heater for a goldfish your fish could desire to be constipated no shaggy dog tale its very resembling swim bladder . have to procure stay flora if not you may introduce them in to the aquarium or the fellah will finally die (regrettably).I even have examine your rationalization and it fits with each little thing on the brochure from pets at abode yo could circulate on your interior sight puppy keep just to verify yet i'm tremendously specific your fish is constipated. desire I helped

Answer 6

If there is no obvious damage, it's probably just his natural markings coming out. If his fins aren't ragged or clamped, and he's eating and swimming fine then you don't have anything to worry about.

Answer 7

it is just starting to get its color. i had a goldfish who was completely black but after a week or so he turned orange. he looked pretty cool halfway through the change of his color. he was the longest living fish i ever had, but then he got in a fight with a new black moor and they tore each other apart. so there is nothing wrong with your fish. (stay away from black moors, theyre viscious)

Answer 8

no worries there -he is just growing up. goldfish all start off black and then change to gold/white etc. they can also then get some black colouration back on their fins. it varies really.

Answer 9

It is just getting some coloration to its body, nothing to worry, maybe betta color enhansing fish food might bring out some more color.

Answer 10

Just more normal coloration on the fish is the most reasonable answer. Whith no damage and as long as he is acting ok, I would say there is nothing wrong with him.

MM