Here are some photos of the native freshwater Opae found here in Hawaii. This is the "mountain opae" aka Atyoida bisulcata aka 'Opae Kala'ole aka 'Opae Kuahiwi. Like other atyids? They have a fan basket to filter debris out of the water but also forage for food in the gravel.
They don't seem to like water over 74 degrees, for they die and turn pink, like they got cooked.........ironic because I have heard thay they used to be a native food source when they were abundant.
There are a few photos from differnt angle and one shot has a WT Neocaridina denticulata sinensis to compare size and color. These are relatively small cause I have seen some aproaching 2".
I think I promisesd these photos to either Jan or Pisces girl well over a year ago......sorry for taking sooooo long