Zebras with tail/fins shrinking?

YSR50

Member
Apr 29, 2009
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Chicago-ish
1. A good general description of the symptoms.
I've noticed in the last few months that 2 of my 3+ year old zebras have very little tail left. Their fins seem smaller also. The dorsal fins aren't bad though. Also, my alpha male zebra that's the same age (as well as the other tank mates) is mostly fine. I don't check the water preamps very often and I let the eheim go for too long this past time so I was wondering if this looks like a water condition issue? Not sure why it would only effect 2 of my fish though. Don't think the tank mates would be the problem.


2. Size of tank and other tankmates.
15 gallon (24x12x12") with 2 sterbai and 3 dwarf neons. Setup has remained unchanged for almost 3 years.
No lights on the tank, just gets light from surrounding tanks.

3. Water parameters tested with Easy Strips

a. Ammonia: 0
b. Nitrite: 0
c. Nitrate: 40
d PH: 7
E. KH: 60
f. Gh: 150


4. Filtration and water change regime.

a.What filtration do you have running on your tank?
Eheims 2028 pro 2 cleaned about twice a year, emperor 280 media changed every month. Eheim aqua ball
b. How often do you do water changes? how much do you change?
2-3 times a week, 2-3 gallons of tap each time
c. what do you use to remove chlorine/chloramines(if present) and heavy metals?
API
Once in a while I'll use a gallon or two of RO water that has almonds leaves soaking
6" air stone

5. Diet consists of mainly nls Thera + a, and flake. With the occasional shrimp pellets, frozen brine shrimp and frozen blood worms


6. Temperature of tank water is about 85
 

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YSR50

Member
Apr 29, 2009
92
0
6
Chicago-ish
My alpha, wouldn't leave his cave, but he looks pretty much ok.

Sorry for the individual posts, Site is only letting me load 1 image at a time off of iPad.
 

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Brengun

Global Moderators
Staff member
Apr 22, 2009
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Burrum Heads, Queensland, Australia
If its mostly the tail I would say a smaller one got in a cave the male wanted and he chewed the tail to get them to move.
You may also have had a mini cycle or a high nitrate which could start a fin rot. Looks to be halted now whatever it was.