mysid vs mysis

viodea · 01/29/2009, 03:37 PM

I've read somewhere saying mysis is flashwater shrimp and not good for saltwater fish. Mysid is what should be used. I can't find the link anymore.
Seems like most people suggest to use mysis here. Am I getting the 2 confused?

Skeptic_07 · 01/29/2009, 04:03 PM

I think they're the same thing, but i could be way off.

spleify · 01/29/2009, 04:22 PM

I believe mysid is saltwater, and mysis is fresh water.
I don't know much more than that, and could even be wrong about this.

seapug · 01/29/2009, 05:02 PM

Spleify is correct.

Mysis shrimp are an example of a freshwater source food that is perfectly safe to use for saltwater creatures, much like Cyclops. Quality Mysis shrimp is arguably the best food for fish and lps corals.

Crustman · 01/29/2009, 05:11 PM

This may be confusing but the mysis is actually a stage in the life cycle of some shrimps. It goes like this egg, protozoea-zoea-mysis-post larvae. A mysid is a shrimplike crustacean in the Mysidacea. A large family of this is Mysidae. These resemble shrimps but have statocysts, balancing organs in the uropods-tail fan that true shrimps do not have. They are also filter feeders.

seapug · 01/29/2009, 05:20 PM

Is it not also a specific genus and species of freshwater shrimp? PE Mysis is "Mysis relicta" (I believe). On the other hand, the little marine ones that come as hitchhikers in our tanks are simply called "mysids" as a descriptive term for all shrimps in the Mysid Family, correct?

Crustman · 01/29/2009, 07:31 PM

Oh yes Seapug, I forgot about this one. Most mysids are marine however. The mysis stage of decapod shrimps is called this because they resemble mysids.

greenbean36191 · 01/30/2009, 09:17 AM

The genus Mysis has freshwater and marine members. In the hobby, the terms tend to be used interchangeably so I wouldn't interpret either one to mean anything specific.

In any case, as far as feeding goes, even the FW species make excellent marine food.

01/29/2009, 03:37 PM	#1
viodea Registered Member Join Date: Oct 2007 Location: Kansas Posts: 520	mysid vs mysis I've read somewhere saying mysis is flashwater shrimp and not good for saltwater fish. Mysid is what should be used. I can't find the link anymore. Seems like most people suggest to use mysis here. Am I getting the 2 confused?

01/29/2009, 04:22 PM	#3
spleify Registered Member Join Date: Dec 2003 Location: Denver, Colorado Posts: 9,579	I believe mysid is saltwater, and mysis is fresh water. I don't know much more than that, and could even be wrong about this. __________________ Make it a Great Day!!!! Current Tank Info: 60 gal SPS cube, with 25 gal refugium, 400W MH, DIY Lumenarc III, DIY skimmer, DIY stand and canopy. 40 breeder LPS with 40 gallon sump, DIY stand, 250W MH

01/29/2009, 05:02 PM	#4
seapug Registered Member Join Date: Dec 2006 Location: 4980 ft. Posts: 7,954 Blog Entries: 1	Spleify is correct. Mysis shrimp are an example of a freshwater source food that is perfectly safe to use for saltwater creatures, much like Cyclops. Quality Mysis shrimp is arguably the best food for fish and lps corals. __________________ insert clever saying here. Current Tank Info: 200 gallon custom Marineland DD peninsular tank. LPS dominated mixed reef. Previous 90 gallon mixed reef TOTM April 2009.

01/29/2009, 05:11 PM	#5
Crustman Registered Member Join Date: Oct 2008 Location: Mobile, Alabama Posts: 941	This may be confusing but the mysis is actually a stage in the life cycle of some shrimps. It goes like this egg, protozoea-zoea-mysis-post larvae. A mysid is a shrimplike crustacean in the Mysidacea. A large family of this is Mysidae. These resemble shrimps but have statocysts, balancing organs in the uropods-tail fan that true shrimps do not have. They are also filter feeders. __________________ Tom Current Tank Info: 65 gallon reef with 8 T-5's, ATI Blue Plus, Blue Special, KZ Fiji Purple, Vertex IN 100, phosphate and carbon reactor Coralife Turbo Sea Pump

01/29/2009, 05:20 PM	#6
seapug Registered Member Join Date: Dec 2006 Location: 4980 ft. Posts: 7,954 Blog Entries: 1	Is it not also a specific genus and species of freshwater shrimp? PE Mysis is "Mysis relicta" (I believe). On the other hand, the little marine ones that come as hitchhikers in our tanks are simply called "mysids" as a descriptive term for all shrimps in the Mysid Family, correct? __________________ insert clever saying here. Current Tank Info: 200 gallon custom Marineland DD peninsular tank. LPS dominated mixed reef. Previous 90 gallon mixed reef TOTM April 2009.

01/29/2009, 04:03 PM	#2
Skeptic_07 Registered Member Join Date: Jul 2007 Location: lawn guy land Posts: 1,418	I think they're the same thing, but i could be way off.

01/29/2009, 07:31 PM	#7
Crustman Registered Member Join Date: Oct 2008 Location: Mobile, Alabama Posts: 941	Oh yes Seapug, I forgot about this one. Most mysids are marine however. The mysis stage of decapod shrimps is called this because they resemble mysids. __________________ Tom Current Tank Info: 65 gallon reef with 8 T-5's, ATI Blue Plus, Blue Special, KZ Fiji Purple, Vertex IN 100, phosphate and carbon reactor Coralife Turbo Sea Pump

01/30/2009, 09:17 AM	#8
greenbean36191 Premium Member Join Date: Jun 2003 Location: Ft. Lauderdale Posts: 10,598	The genus Mysis has freshwater and marine members. In the hobby, the terms tend to be used interchangeably so I wouldn't interpret either one to mean anything specific. In any case, as far as feeding goes, even the FW species make excellent marine food. __________________ Some say the sun rises in the East. Some say it rises in the West. The truth must be somewhere in the middle. Current Tank Info: tore them down to move and haven't had the time or money to set them back up