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Re vernacular names:
"ghost shrimp" are burrowing marine shrimp (Thalassinidae) and "grass" or
"glasss" shrimp are non-burrowing freshwater shrimp (Palaeomonidae).
Apparently, the aquarium hobby has borrowed the more marketable and
mysterious term and misapplied it. "Ghosts" are haunting and rarely seen;
"grass" and "glass" are common and can be picked up around your workshop.
Re Macrobrachium -
The larger, long-armed freshwater shrimp (sometimes called "river prawn") is
seasonally fished in the Mississippi River. I believe the species was used
as food in some regions, but commercial fishermen definitely use it for
bait. They catch them using submerged willow branches and special traps.
The shrimp are very easy to keep in aquaria and can become quite colorful
(dark brown-green with blue highlights). I kept a small group for about 8
months. There was continual attrition, though. Recently-shed specimens
would be attacked by their tank-mates no matter how much food they were
given. They are probably best kept by themselves or with small fish.
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Re vernacular names:
"ghost shrimp" are burrowing marine shrimp =
(Thalassinidae) and "grass" or "glasss" shrimp are =
non-burrowing freshwater shrimp (Palaeomonidae). Apparently, =
the aquarium hobby has borrowed the more marketable and =
mysterious term and misapplied it. "Ghosts" are =
haunting and rarely seen; "grass" and "glass" are =
common and can be picked up around your workshop.
Re Macrobrachium -
The larger, long-armed freshwater shrimp (sometimes =
called "river prawn") is seasonally fished in the Mississippi =
River. I believe the species was used as food in some regions, =
but commercial fishermen definitely use it for bait. They catch =
them using submerged willow branches and special traps. The =
shrimp are very easy to keep in aquaria and can become quite colorful =
(dark brown-green with blue highlights). I kept a small group for =
about 8 months. There was continual attrition, though. =
Recently-shed specimens would be attacked by their tank-mates no matter =
how much food they were given. They are probably best kept by =
themselves or with small fish.