Please can you ID this UK river fish?

wrote in
oups.com:

Google, and it does look like they are Phoxinus phoxinus. The only
thing is that many of the pics I saw showed red under the lower fins,
which ours don't have.

Adult males have red belliew during breeding time. Your fish are
youngsters, and it is not time to breed now.

and raise them. I was wondering about dropping a couple of ice cubes in
the water each day to try and keep it cool.

Nope, that isn't enough. If your home is very warm, get a little fan (those
made for cooling computers are perfect), and place it so that it will keep
surface moving. It will turn the temp down a couple of degrees. Or create a
system where cold water drips to the tank all the time and extra water runs
away.

They are in the kitchen, right near a sink, so regular water changes
are very easy. I have an air stone in there on a timer, so the water is
oxegenated for about six hours every night, and another hour or so
during the day. Hopefully that will keep them happy.

Just an airstone, and no filter or anything else to make the water move?
Not good. Minnows are hardy, but as cold water fish they do need oxygen.
Get a strong filter if you are going to keep them. I hope that your tank is
big enough, as they will grow during winter if kept properly. 100 liters
might be ok for that school.

Liisa

Liisa Sarakontu wrote:
Google, and it does look like they are Phoxinus phoxinus. The only
thing is that many of the pics I saw showed red under the lower fins,
which ours don't have.

Adult males have red belliew during breeding time. Your fish are
youngsters, and it is not time to breed now.

Ah, that explains it, thanks.

and raise them. I was wondering about dropping a couple of ice cubes in
the water each day to try and keep it cool.

Nope, that isn't enough. If your home is very warm, get a little fan (those
made for cooling computers are perfect), and place it so that it will keep
surface moving. It will turn the temp down a couple of degrees. Or create a
system where cold water drips to the tank all the time and extra water runs
away.

OK, I'll look into that. I'm more used to keeping tropical fish, so the
idea of cooling a tank is quite a novelty to me!

They are in the kitchen, right near a sink, so regular water changes
are very easy. I have an air stone in there on a timer, so the water is
oxegenated for about six hours every night, and another hour or so
during the day. Hopefully that will keep them happy.

Just an airstone, and no filter or anything else to make the water move?

Not at the moment, but it looks like I'll need something.

Not good. Minnows are hardy, but as cold water fish they do need oxygen.
Get a strong filter if you are going to keep them.

OK, I guessed that was coming next ;-) I had the air pump and stone
around from a previous tank, so I used that as an immediate solution,
but I guess you're right, a filter is going to be needed pretty soon.

I hope that your tank is
big enough, as they will grow during winter if kept properly. 100 liters
might be ok for that school.

It's definitely not big enough for when they grow, but is probably OK
for now. I have kept fish for enough years to know about giving them
enough space, and will keep a careful eye on their growth.

Thanks again for the reply.