How big is the silver fish in the 2nd picture?
Do you know if it had 2 dorsal fins, a small one further forward and the one in the picture?
This is exciting, it looks a bit like a female Iriatherina werneri (a rainbowfish found in Australia and New Guinea). But if it is, then you may have found a new colour form and an extended distribution range for the species. A bunch of people could be excited by this
Do you mean this one?
I don't remember spotting anything pelagic with two dorsal fins. It could just be that I did't notice. The non-benthic fish that I saw all looked like Pearl Danios to me. But, I could have missed something. Looking at the photo, I was wondering if this was something different.
These fish were all about reasonable size for Pearl Danios. Similar to typical Eurasian Minnow size. They acted a lot like Eurasian Minnows too (I might have spent a fair slice of my life immersed in fresh water.)
The first pic has what appear to be some sort of freshwater goby. They could be a new species or someone might have found them a while back. But most gobies are not well known, nor regularly kept in freshwater aquariums.
I think there might be two species in the first picture. The darker fish seemed to be acting like some sort of hillstream loach type thing. The others acted like gobies. I saw some larger ones earlier on but I don't know if they were captured by video as I had just (effectively, I didn't expect it to happen) chased some buffalo from the water and it was still cloudy. Later on I did encourage one of the fish that looked as if it might be some sort of hillstream loach to move by finger proximity. But, the fish was very small indeed and I'm not sure if it got picked up by the camera or not.
The fish that I encouraged to move looked and acted like the world's smallest pleco. And, yes, I know about Otos. This was smaller. Though, I think some Sicyopterus species act a bit like that. There definitely seemed to be multiple species of benthic fish. And, I didn't see the tiny goby (maybe) that was near black and had a well defined 'neon' line that I saw before.
If I have found anything that might be of interest to someone, who might this someone be and how would I contact them?