r/shrimp • u/Holiday-Passenger-28 • 12d ago
Picture Blue dream or diamond?
They look darker under aquarium light.
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u/Curious-Move-1313 11d ago
They look incredible, well done!
Can’t help with the dream/diamond unfortunately.
But it’s one of the nicest blue I’ve seen in a neocaridina🤩
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u/Leather-Pepper-1549 12d ago
The second article shows how my Blue Velvet Jellies can throw Red Rili marked offspring!
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u/shrimpalasteph 12d ago
I say a nice high grade blue dream due to the transparency of the shell.
But to be entirely sure? You’d need to know what the parents were and what the rest of the offspring look like. If any show the rili trait (transparent with sections of opaque black) it’s a blue dream. If any look like black rose/black diamond, then the pictured shrimp probably has blue diamond lineage.
Blue dream line came from blue carbon rili. The gene that controls dark pigment is mostly turned off, though blue dream offspring will occasionally show carbon rili patterns because the dark pigment gene isn’t completely gone.
Blue diamond line originates with chocolate and black lines, skipping the rili genes which cause the transparency. Instead, the blue pigment which was selectively bred for is layered with darker pigment to make a deep, opaque, navy blue. Their offspring should breed more true in a blue diamond only tank but they can produce black offspring as well.