You are here:

Freshwater Aquarium/my red tail shark


Hi, I've only had my tank set up for a month or so, and am quite a novice so any advice is appreciated. My red tail shark's dorsal fin has a white edge to it (doesn't look fluffy but more like the black has changed colour to white)...her fins underneath her also have a smaller white edge to them...could it be fin rot? If so how do I go about helping her?
As I said any advice would be greatly appreciated, many thanks, Mark

Hi Mark

White edge on the Redtail Shark is normal coloring for a female. If the fins are not torn and she is acting healthy (swimming and eating normally) then I wouldn't worry about her. Check your water parameters regularly and perform your weekly tank maintenance and she should be just fine.

Hope this helps, good luck!


Freshwater Aquarium

All Answers

Answers by Expert:

Ask Experts


Richard Hight


I own and maintain several freshwater aquariums from 2 to 180 gallon. I can answer most questions about freshwater aquariums, including setup, cycling, maintenance, compatible tank mates, feeding. Moving? I've moved fish both across town and across the country and can help you get your little aquatic friends to their new home safely. I know and have experience with most freshwater community fish, South American Cichlids and African Cichlids. I don't answer questions about Goldfish or keeping Goldfish with Tropical Fish. I also don't answer questions about keeping crustaceans (shrimp, snails, crabs etc) with Tropical Fish, nor questions about saltwater fish or aquariums. I'm not available to answer questions on weekends, this is when I do maintenance on my own tanks.


Many years of personal experience with community tank fish, semi-aggressive fish (Barbs, Tetras, etc), Angels, South American Cichlids and African Cichlids.

HSG 2010-2011 prof

©2017 All rights reserved.