Tropical Fish Keeping - Aquarium fish care and resources

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BarbH 09-27-2011 12:20 PM

3 dead platys in 24 hours
Looking to get others opinions on what may be going on. This morning I found 3 of my platys dead. Everyone has been swimming around actively, eating, no signs of labored breathing. Appearance of all fish have looked fine. The other fish that are in the tank are also showing no signs of illness or anything being wrong. Here is some information on the tank, my ammonia when testing was slightly elevated which I believe was probably from the 3 dead fish in the tank.

1. Size of tank? 50 gallons

2. Water parameters
a. Ammonia? .25 ppm
b. Nitrite? 0ppm
c. Nitrate? 5ppm
d. pH, KH and GH? 7.4, 3, 8
e. Test kit? API master test kit

3. Temperature? 78

4. FW (fresh water) or BW (brackish)? fresh water

5. How long the aquarium has been set up? May

6. What fish do you have? How many are in your tank? How big are they? How long have you had them? 4 angelfish added in May, 2 bolivian rams added in May, 6 black widow tetras added in May, 13 corys 7 added in May 6 added a few weeks ago, 2 rubberlipped plecos added in May, Platys started with 6 in May 4 females 2 males lost one of the orginial females about a month ago. About 2 months ago added 2 more females, lost one while changing over substrate from gravel to sand. Two weeks ago added 3 female platys, lost one of those 3 within a week of adding. The 3 that I found dead this morning was two of the orginials added in May and the other one was the remaining female that was added two months ago

7. Were the fish placed under quarantine period (minus the first batch from the point wherein the tank is ready to accommodate the inhabitants)? No

8. a. Any live plants? Fake plants? Live plants
b. Sand, gravel, barebottom? sand
c. Rocks, woods, fancy decors? Any hollow decors? Maylasian driftwood 4 pieces, a few river rocks

9. a. Filtration? 2 sponge filters one in each corner combined rated for 100 gallons
b. Heater? yes

10. a. Lighting schedule? What lights are used? Lights on at 11:00am off at 9:00pm
b. Any sunlight exposure? How long? no

11. a. Water change schedule? weekly
b. Volume of water changed? 50%
c. Well water, tap water, RO water? tap water
d. Water conditioner used? was using API stress coat just changed to tetra aqua safe plus
e. Frequency of gravel/sand (if any) vacuumed? weekly

12. Foods? Flake food, occassional treat of frozen blood worms
How often are they fed? Flake food daily, frozen blood worms once a week or so.

13. a. Any abnormal signs/symptoms? no
b. Appearance of poop? normal
c. Appearance of gills? normal

14. a. Have you treated your fish ahead of diagnosis? no
b. What meds were used?

15. Insert photos of fish in question and full tank shot if necessary

Read more:

Also recently added more live plants to the tank, although don't think that should have had any effect.

BarbH 09-29-2011 10:07 AM

Found another female platy dead this morning. Don't know what is going on, no signs of illness and the other fish do not seem to be affected. This was one of my orginal females from May. So at this point I am down to two females and two males. Water parameters are good ammonia and nitrites 0 and nitrates are at 5. I am hesitant of adding any more platys after all the deaths this week :-( What ever is going on I am hoping does not spread to the other fish. Right now I do have an open 10 gallon, I am debating about removing the remaining platys from the community tank and placing them into the 10. Any opinions? :-?

k19smith 09-29-2011 10:16 AM

It couldn't hurt, I don't see anything that jumps out at me. In less someones picking on one another or you've picked up a disease with the newer fish but it's really just gonna be a watch and wait game from what I'm seeing. Moving them maybe the safest thing for the platys right now, maybe you will notice something different with them on their own.

BarbH 09-29-2011 10:41 AM

Thanks, this really does have me confused since it is only been the platys that have been dying, and they seem to be healthy until I find them dead. This is the largest amount of deaths that I have had since I started my tank

k19smith 09-29-2011 12:03 PM

I was having massive unexplained shrimp deaths after I had added pvc pipe, new plants, and driftwood I worried myself sick trying to figure it out. 3 weeks later I found one lone guppy who just liked to beat them to death and couldn't even eat them because they were to big. I was convinced I had added the shrimp plague to my tank. Waiting is no fun.

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