Hi everyone I woke up today and one of our goldfish is floating at the top of the tank and has a red wound on it's side. I have not posted before but I have read a lot of advice about keeping goldfish as pets so I will give a bit of background and if possible please can I have some advice? I know that goldfish are difficult to look after and I'll be honest I didn't want any pets. I took my children to a fair and they won the goldfish while I was talking to another mum (my fault). The stallholder refused to take the fish back and when we were walking round we actually saw some dead goldfish where people had dropped the bags and I felt so sorry for them. We have a very large ornamental public pond (almost lake) where we live but I read that it is illegal and cruel to set them free there even though I've seen massive goldfish in it, so I didn't do that. We don't have a garden so my only option was to buy an aquarium. I could only afford 56litres at the time and I'm well aware they need a bigger tank. I've saved most of the £1k I need for a 6 foot tank and can hopefully buy this in September. I'm really disgusted by pets at home telling me the small tank I bought is like a fish mansion because I know this isn't true. One of my questions is will they both be ok in the 56litre until I get the new one in a couple of months. Obviously I'll need to cycle it first so it will probably be in October they're in their new home. I don't know how old they both are but they started at an inch long each and are easily twice the size in the last 4 weeks so they must have some room to grow right now. They have a good filter and air stone so lots of surface disruption. They sleep in the corner when it's dark away from the filter so I've put lots of plants there and they seem generally happy as in they recognise me and swim over when they think I'm going to feed them. I started doing 20% water changes every day then a third every 2 days. I use water conditioner. Today we have had them for 4 weeks so I did a complete water change and rinsed the gravel and ornaments with tap water and rinsed the filter pad. I was going to do this on Monday when the tank was 4 weeks old but I was worried they got sick from uncleanliness. I've used a dipstick and everything is fine. I bought them some bloodworm and brine shrimp but usually feed them flakes as the pellets I was getting at first were just getting sucked into the filter as the fish swim to the top when I open the lid so they were missing them. They do root around in the gravel for treats but I don't know if they were finding the pellets. Are pellets or flakes better? Today the smaller one (named Gummi Bear by my daughter) is floating near the top and has a mark on it's side. I can't tell what it is from looking online. When I got the fish I used King British disease clear in the tank as I was sceptical that the fairground people had bothered looking after them and didn't want them to have any diseases. It is mostly floating at the top like it's looking for food but not gasping for air. The oxygen in the tank is fine anyway. Could it be swim bladder? I feed them twice per day as much as they can eat in a few mins. Would that explain the sore? I'll put a photo on. The larger one (Goldie) is hiding in the plants with all fins clamped looking sorry for himself. When he does move he's darting around wildly. They were both like this before I cleaned the tank (forgot to mention I've read up about bacteria etc and every time I've cleaned them I swish the filter media in the old tank water and I don't use any detergent or anything). What could be wrong with them? I feel so bad if it's my fault. Sometimes Goldie (the big one) will chase Gummi Bear around the tank - maybe 3 times that I've seen but not sure about when I've been asleep or at work but it's usually over food from what I've seen. Like one will chase the other until they spit food out and then eat whatever came out. Even though I put enough food in for both. They haven't done that for a couple of weeks now. Also noteworthy to mention the tank came with a light but I don't use it because I read they don't like this because they have no eyelids? Nothing like light temp or noise has changed outside the tank. Ive stopped even using a wax melter in my living room in case perfume gets in there. My plan of action is to not feed them for 24hrs and just give them some skinned peas tomorrow. They like these as the first day they came here they had white poops so i gave them peas and they were better after that. Is there anything else i can do to help them? Is it because the tank is too small? My children will be devastated if they don't recover. Thanks in advance for any advice.