I've had a few tiger barbs for several years now in a 6 gallon plant tank. The smallest one was always ratty looking from being beat on all day by the bigger ones, yet he held on with hardly any fins for years. This past week or so I noticed crazy plant growth in my tank. It has never looked better. Funny this is ... other than feeding them, I haven't cleaned the glass or done a water change in maybe 3-4 weeks. On top of that the co2 injector needs a refill and the lights are old. Yet the plants are going nuts. Well last night I noticed I didn't see the little guy at feeding time. It's not a big tank, I am pretty sure he's dead. I am sorry to see him go, but he really had a hard life. The tank looks amazing. How do you think I can keep this going? Throw a dead feeder fish in there? heh.. Plant tanks are kinda wild. SOmetimes dirty water pays off.