Goldfish And Wild Caught Fish Communities

[Onderdole]

Noob here.



In the tank we got:


2 Dace - one about 6cm the other about 9cm
1 Rudd - 6cm
1 Gudgeon - 7cm


How will Comets get on with the peaceful , Dace , Rudd and Gudgeon.

All advice appreciated

 

[Truck]

your question about the shy fish. i would buy some sinking pellets that just drop to the bottom and they wouldnt fit in the minnows mouths. a

as for the rudd etc. isnt that illegal. rud can get very big and fish that come out of rivers are very messy. and they can sometimes have lots of diseases.
im not sure about mixing them personnally i wouldnt. i would release them back to the river. but they will probably die as they have addapted o warmer temps in your house

 

[Butch]

your question about the shy fish. i would buy some sinking pellets that just drop to the bottom and they wouldnt fit in the minnows mouths. a

as for the rudd etc. isnt that illegal. rud can get very big and fish that come out of rivers are very messy. and they can sometimes have lots of diseases.
im not sure about mixing them personnally i wouldnt. i would release them back to the river. but they will probably die as they have addapted o warmer temps in your house

OMG. Your advice was terrible!

Your talk rubbish about the wild fish.

As for rudd, they can grow too big but they make good pond mates for koi and goldfish outdoor.

Do not release the wild fish back to the river! They can carried diseases from aquarium and spread in the wild.

As for the goldfish mixing w them, I wouldn't mix them with the wild fish except the rudd (if they were in pond).

 

[GoldfishAttentionSpan]

Do not release the wild fish back to the river! They can carried diseases from aquarium and spread in the wild.

If the fish has only been in the tank a short while and hasn't come into contact with any non-native fish or chemicals (medications, etc.) I wouldn't see a problem with releasing them. I would much rather see these fish freed to where they should be than be held captive for no good reason.

If safe/possible (see above) please release the fish and buy some farm raised fish.

 

[xxBarneyxx]

Most of the fish in the hobby (at least the trop side of it) are wild caught so this is not really any different.

That being said though all of these fish (included the gold fish) need large tanks and good filtration. Not sure how big your tank is or the current stocking level so hard to say if goldfish would be suitable or not (most likely not).

 

[Butch]

Do not release the wild fish back to the river! They can carried diseases from aquarium and spread in the wild.

If the fish has only been in the tank a short while and hasn't come into contact with any non-native fish or chemicals (medications, etc.) I wouldn't see a problem with releasing them. I would much rather see these fish freed to where they should be than be held captive for no good reason.

If safe/possible (see above) please release the fish and buy some farm raised fish.

Wow that was bad advice you have...that would be illegal for release aquarium fish (even if they are natives) back in the wild...do not take their advice about release fish in the water after kept in aquarium no matter how long they been kept in aquarium.

And suggested to get farm raised ones? Why what's wrong with wild caught ones? I don't understand why you said that?

 

[Honeythorn]

Because wild caught ones ( that have never been farmed ) tend to more often have diseases and parasites. Farm bred native fish are more likely to have been treated for such things as they are bred for release into the wild to keep up populations and provide new blood for angling ponds and rivers anyway. There is nothing wrong with the advice at all.


Barney - Most of the fish we buy in shops are not caught from the wild. Most of the ones you find are captive bred. Only rarer species are likely to be wild caught.

Onderdole - I have to ask...how big is the tank you have them in? Is it filtered? Is the water in the tank water you have collected from the same area you caught the fish? ( Because that would be better for their health as it is what they would be used to in terms of chemistry ) Do you have a picture of the tank at all?

As stated, If the native fish have not been in the tank long, have not come into contact with non native fish, and show no visible signs of disease, they can and definitely should be re-released, but it is best not to do so now as the water from where they were collected will almost certainly be colder then even unheated water in an indoor tank, and the temp change alone could shock and kill them. If you release them back into the waters where they came from, you will need to do so in late spring or early summer when the water temp will be closer to that of the tank indoors. There is no need to take fish from the wild at all.

Also, if you wanted a tank of native fish ( which could indeed be obtained from a fish farm if you want a native tank so badly ) then why do you want to add goldfish? They are certainly not native and whilst they would more than likely get on fine with what you have, it would make for an odd mix. also the fish you have in there now are if I recall correctly, all schooling fish . You don't have enough of any of them to create an effectively behaving population that would make a native tank work well.

 

[Butch]

Because wild caught ones ( that have never been farmed ) tend to more often have diseases and parasites. Farm bred native fish are more likely to have been treated for such things as they are bred for release into the wild to keep up populations and provide new blood for angling ponds and rivers anyway. There is nothing wrong with the advice at all.


Barney - Most of the fish we buy in shops are not caught from the wild. Most of the ones you find are captive bred. Only rarer species are likely to be wild caught.

Again your wrong about farm raised fish, they were not used to mixing new blood with wild populations as it cause genetics problems in the wild populations and barely survive in the wild. And again your wrong about release fish in early spring or summer, the native fish will already carried aquarium disease by now.

Not true that all wild caught ones have diseases. Mostly all my fish are wild caught and they do fine. They have bred for me.

Some farm raised ones are wild caught (some species who cannot reproduce in aquarium) but was raised in the farms.

Honeythorn do you keeping natives? If not then do not assumed that they were farm raised, most of them ARE NOT farm raised as all big natives are used as food or as gamefish/baitfish. Mostly small natives are not farm raised ones with very few species used for baitfish. Sorry but your wrong.

Try prove me that im wrong but I worked for DNR Fisheries.

 

[Honeythorn]

Hang on...If there are only wild caught native fish in an aquarium that has had no non native species in it ( the OP wants to know if they CAN add a goldfish, as far as we know they haven't yet done so ) then how can they possibly catch an aquarium disease?

 

[Butch]

Hang on...If there are only wild caught native fish in an aquarium that has had no non native species in it ( the OP wants to know if they CAN add a goldfish, as far as we know they haven't yet done so ) then how can they possibly catch an aquarium disease?

Are OP's plastic plants, rocks and other stuff that used to be in the tropical tank in past in same tank where the natives kept. And are OP's feeding natives with flakes/pellets? If OP did that, then the natives will have trouble with feeding in the wild after used to munching on flakes.

We don't even know if the tank was used as tropical fish tank in past. Its called pathogens and it is hard to get rid of them. I strongly against about release fish back in the wild after kept in the aquarium. If you need to get rid of them, just destory them or give them away to other fishkeepers.

 

[Onderdole]

thanks for the advice so far its makes sense .

i got a brand new 88ltr ( 20gal) tank.

all contents of tank, plastic plants substrate, rocks ect, filter were new when put in tank.

Ive been using rain water and declorinated tap water mixed. I did colelct a sample of the water where i caught the fish so as to try mirror that. This ive managed to do except for the temparature which i cant get down to my tank is staedy at about 14degC

Thus far ive changed the feed of the fish each day they get one from the following (not all on same day)!!

flake, castors ( magot pupa), boiled sheleld peas, daphnia cube, shrimp cube, dough, frozen spinach thawed

yes currently 3 commets are in separate tank, ther has been no mixing of native / non native. I have however medicated the tank ( tonight) with Sera Med for Nematodes and now understand about potential future immunity of parasites to meds by releasing fish.

My plan now is to keep what i got in the 88ltr tank.

get another 88ltr for my 3 commets.

in the future i may have to get rid of the Rudd to someones pond.

I overlooekd the shoaling the Rudd and dace and Gudgion are getting on allright and hopefully drawing some community from each other as i dont think i can rectify it now.

lesson learned in that case, thanks for the good advice folks.