Have i dont right thing with the algae and anyone recomend any fish food to help bring out colours ?
Slightly confused re algae part of query
Sundadanio sp. I suspect you’ll have some difficulty getting them to show the sort of photo colours they’re capable of
- tank is too small (though these are small fish and SF species profile does list some very small tanks, I noticed they were much more active in my 90 x 45cm, males would display and spar quite vigorously)
- shoal is too small (longterm they seem to do better in larger groups)
- fish are too young?
- mostly females?
rather than food being the issue (unless you’re feeding very poor quality - which I doubt)
I’m just guessing above as you’ve not included good photos of your Sundadanio
Obviously light will also affect our perception fish colours (no idea if/how it affects fish view of fish colours as I’ve not kept up on fish vision research)
I’ve kept Sundadanio blue/green under Kessil A160 and they still look amazing ... iridescent golds, green, blues, some red markings on the blue sp, black fin markings
I fed mostly frozen Hikari bloodworm, brine shrimp, daphnia
A couple years ago, one lfs brought in “Sundadanio sp red”, these are somewhat larger - for whatever reason, new deaths occurred daily in the group so I never brought any home; this species definitely ships the worst of the “Sundadanio sp.”
(previous shipments arrived DOA
)
This article is perhaps somewhat dated now (but remains open access)
Review of the Southeast Asian miniature cyprinid genus Sundadanio (Ostariophysi: Cyprinidae)
with descriptions of seven new species from Indonesia and Malaysia
Kevin W. Conway*, Maurice Kottelat**,*** and Tan Heok Hui**
https://pfeil-verlag.de/wp-content/uploads/2015/05/ief22_3_08.pdf
Sundadanio margarition is now on the IUCN Red List of Threatened Species 2019