Hi, I believe I have 4 Tiger Barbs still showing signs of injury from the Rainbow Shark I had (story here: https://www.fishlore.com/fishforum/tiger-barb/59753-breeding-tigers.html) I've never had injured fish before, do they ever recover? They all have either abrasions or what look like severe cuts on their side. The one mentioned in the link above has also since died. The ones with the most severe looking cut marks also have dim markings (their black stripes are pale). Rainbow Shark was donated to local fish store. Thanks, Tim.