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Could be baby trouts but I am not sure.
In the river Tormes, that passes through Salamanca
Spotted on Jul 14, 2012
Submitted on Jul 28, 2012
4 Comments
Dear Jolly:
these sac does not mean they are pregnant. Many baby fishes have at an early state yolk material from the egg in a sac that they keep in the abdomen area and that dissappears as they develop. Please check anatomy of baby fishes in the internet and you will see what I mean. Here you can read more:
http://www.fishbabies.ca/waterbabies/wba...
Guppies may be common in rivers in Philippines, I don´t know, but definitely not in Spanish rivers.
If you take a look at your first picture, you will notice they have big tummies indicating they are pregnant. Guppies are live bearers that's the reason why their tummies enlarge. I know they are supposed to be aquarium fishes but they do exist in the wild. We have them here in our rivers too. If I'll have the time, I will go and photograph them.
Hi Jolly,
I think they are babies of a much bigger species. Check how the babies of trout look like. Goopies are normally aquarium fishes but these are fishes in a big river. Anyway, thanks :-)
They look like female guppy. http://en.wikipedia.org/wiki/Guppy