More bad luck, three cories dead.. :(
I just recently (last weekend) lost my Dwarf Gourami to what appeared to be the dwarf Gourami iridovirus.. I'm not sure if that caused the death of my cories.. I honestly don't know. One of them got stuck in the outlet tube of my sponge filter but it seemed fine and healthy by the next day. I left for a vacation last Thursday and came home Sunday night to find two skeletons and one that looked like the shell of a cory. I didn't get home until almost midnight, and I'm assuming the water parameters could be screwy anyways because of the dead fish, so I haven't been able to test my water parameters yet.. I did remove the cory remains and did about a 50% water change.
I think everyone else is fine. I may have lost a shrimp or two.. but some of them were molting last week so I don't know if they were just eaten? I haven't really had time to really look through to see if all the shrimp are there or not..
Other tank inhabitants are my rummys, harlequin rasboras, and a golden ram. The ram is a recent addition and I did increase the tank temp from 78 to 80 over last weekend, but those have been the only changes. I've had a ram with these fish before for a few months so I do not think the temp change is the problem. I'm not sure of it's something from the ram, but everyone looked perfectly healthy when I left and no one else has any signs of any diseases or anything else.
Since I was leaving for vacation for a few days on Sun-Tues I fed them a little more than usual, but I did a water change on Sat or Sun as well as on Wednesday night before I left. I checked the water Wednesday and everything was normal as far as my parameters.
Hopefully these remaining cories make it.. they're some of my favorite fish. I'm not sure how long I should wait to add a few more so they'll have their shoal back.
The only thing strange when I returned was the large amount of amano shrimp poo all over the tank. Not sure how much that impacts the water quality.. I woke up this morning, not 9 hours after the water change and there's already a bunch of amano poo already. I will probably have to do another water change tonight. I don't overfeed to the point that there is food at the bottom of the tank.. I've also got snails which pick up anything uneaten anyways.
It would help to know the readings for ammonia, nitrite and nitrate (esp the last), and the pH now compared to normal (prevously).
Any new fiish may have brought something with it, this seems very common these days, i have had several protozoan and of course ich with new fish whereas for many years I never did. Of course, if the gourami really did have iridovirus, this can be "dormant" in the fish for several weeks before it suddenly kills the fish. I really would avoid Dwarf Gourami; this disease cannot be treated by any means, and it will spread to other fish.
The numbers requested may provide a clue.
Ammonia and nitrite have been steady at zero. I don't remember exactly what nitrate was.. I think 10ppm, but no more than 20ppm. Just tested nitrate now (shook the bottle for something close to 2 mins too) and it's at 5ppm.. ph is steady at 6.6. I have also been adding Florin Delta GH+ from Brightwell to increase my GH, so it was at 5GH when I left & it's at 4 now..
I've had more time to look at the tank now and all my shrimp are still alive so the only losses are the three cories.
Everyone still looks fine and brightly colored.. everyone is active and eating. My ram is still a little picky about eating flakes, but he will readily eat blood worms.
The dwarf Gourami certainly looked like the pictures I saw online. He stopped eating, hung out around the bottom.. had weird lumps. He had a red spot on him and that's when I decided to euthanize him. I certainly will avoid DG's in the future. I didn't realize how common the disease was when I purchased him.
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A couple year's back,, I was having trouble keeping cory's alive for more than a few month's, despite what I felt was good care .
No other fishes presented the troubles that the cory's were giving me and so I began changing substrates from gravel to sand,decreasing temps,increasing water movement/aeration.
None of this seemed to make much of a difference as cory's lasted a bit longer but still perished for unknown reasons, while other fish in these tank's thrived.
I then began to look at dietary need's to see if anything was lacking.
I tried to (still do),, buy fresh food's in smaller quantities, so that food's did not expire before they were used up, and I mixed several types of food into the fishes diet and this produced modest improvement's with regard's to the fishes overall health and longevity.
Was not until I stopped with Blood worm's that the fishes loved(fed these two or three times a week),,,that I began to see better than average result's with respect to the cory's.
Don't wanna get sued by blood worm dealer's, and can't offer any scientific proof that they are harmful, but there was enough of an improvement for me.
Just my two cent's.
That's very interesting.. yes, I do have some issues getting them their food. I've been making more of a habit out of feeding them when the lights do go out. They used to be able to get their food without any issue but lately they haven't seemed as quick to get to the food, so the rummys and shrimp sometimes take it.
I'll probably look up some more tips on their diet. Maybe stop the blood worms.. although they didn't eat a lot of those. I've just been feeding those to get the ram to eat something. Any other suggestions on live food I can easily get which will be good for both the cories and ram? Maybe there's too much fat in the blood worms...
I'll keep an eye on the others. How long should I wait to add new cories?
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I wouldn't feed bloodworms more than twice a week, and better yet only once. Several reliable sources will recommend once only a week. It is partly the fat, plus lack of any real nutrition (compared to prepared foods, bloodworms are near-zero in nutrition), and some say danger of disease though if the bloodworms are properly handled this should not be an issue but only buy reliable brands, like Hakari.
Corys are active at complete darkness, so drop in some sinking foods when you go to bed and the room is in darkness. With room light even after the tank light is out, fish will not usually "sleep" as they can manage in very dim surroundings. But total blackout darkness is different.
I use a variety of sinking foods, one being a shrimp pellet (they love these), one a veggie disk, one is the Nutrafin tablets (my corys and loaches really go after these), and one is the New Life Spectrum sinking granules that sink immediately. I agree with Jack Wattley who has frequently written in his discus column that the quality of prepared foods today is so superior that there is nothing wrong with an exclusive diet of prepared foods. If that works with sensitive discus, it should with corys too.
OK.. so maybe the bloodworms had something to do with it. I typically only feed bloodworms once or twice a month, but it's the only thing I had found that my Ram would eat.. since he's new he's being a picky eater. I was feeding the whole tank the bloodworms since I was already giving some to the ram. He actually started picking at flake foods yesterday so maybe he'll come around soon.
I've been trying to look online on suggested live food for rams and I'm showing that mosquito larvae are a good option to feed until rams are done being picky. Are those more nutritious than bloodworms? I'll also focus more on giving the ram the live foods instead of everyone else. I'll keep everyone else on their normal diet.
I will look into a few more sinking foods for the cories so they've got a more varied diet. Currently, I've just been feeding shrimp pellets and some veggie disks occasionally, which they didn't seem interested in.
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Ok. Well the ram started picking at the flakes some more tonight so hopefully he'll just start eating flakes soon.
The two remaining cories look fine.. as does everyone else. Hopefully everything is fine from now on. I guess if everyone is still fine this weekend I'll pick up some more cories and some*new food for them.*
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