Lysmata amboinensis LYSAMB-080893-WILJOY-003
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observations from aquarist unless noted otherwise (see comments). Information may be
reproduced providing the Breeder’s Registry is cited.
Breeder ID: LYSAMB-080893-WILJOY-003 Date received: 8/8/93
Identification: Lysmata amboinensis (De Man, 1888) Geographic origin: Indo-pacific
Taxonomy: (after I.C.Z.N.)
Subphylum Branchiata (=Diantennata)
Class Crustacea Subclass Malacostraca
Order Decapoda Suborder Natantia
Genus Lysmata (Risso, 1816)
Species amboinensis (De Man, 1888)
Duration female 1 (yr): 0.7 Size female 1 (mm): 51
Duration female 2 (yr): 0.7 Size female 2 (mm): 51
Broodstock notes: Both purchased at ~ 18 mm
Physical differences: None noted (both are females)
Adult diet: Shrimp, krill, fish eggs, flakefood, VHP®, Formula 1®, fed twice daily
Pre-spawning activity: After each molt ( ~ 14 days) each shrimp produces green eggs which are
attached to the abdomen.
Time spawning began: Area spawning occurred:
Frequency of spawning: 14 days
Egg description: Green and compact mass
Approximate quantity: >200
Size: 0.6 X 1.2 mm
Egg changes / development: Green to yellow to white to silver. “Fluffy” and attached.
Incubation period: ~ 14 days
Time hatching occurred: ?
Size of hatching larvae: 2.2 x 0.1 mm
Yolk sac present?: doubtful
Newly hatched appearance: Difficult to see without microscope. Egg mass sometimes remains
on molt. After 3 hours eggs are dead
Transfer / removal method: Egg laden shrimp moved to “larval rearing” tank
Spawning tank size (liter): 75 Sides of tank covered? No
Lighting & photoperiod: 1 – 20 watt fluorescent Actinic 03; 1 – 20 watt fluorescent
Ultralume®, (13 hours)
Filtration: Undergravel filter, mechanical filtration, ultraviolet sterilizer.
Additives and dosages: iodide occasionally added
Water temperature (F): 78-82 Specific gravity: 1.021 pH: not indicated Nitrate: ~40 ppm
Fry development / changes: Microscopically the larvae have 10+ appendages with “velcro-like”
burrs that snag on algae and anything else
First food offered: rotifers
Survival 1st week(%): 0%
Development description: not indicated
Cleaner shrimp “appear” to be hermaphroditic spawners. The larvae appear as
specks of dust. Rearing will be challenging. A container with slick sides and water free from
solids will be needed.. Difficult to see and contain hundreds of “snagging hairs”. Lower nitrates
May contribute to producing more viable larvae.
Word origin: Lysmata appears to be from the Greek roots Lys meaning loose and mat, -aeo,
-eo, meaning foolish or idle. The species amboinensis is from the Latin roots ambo meaning
both; in meaning without ; and -ensi, =s meaning a sword. The literal translation seems a bit
confusing and the genus Lysmata may refer to the cleaner shrimps leaving the substrate (loose)
to clean fish capable of eating them (foolish). The meaning of the species name amboinensis
can be literally translated as “both without a sword”, but the significance of this is not clear.
The order Decapoda means “ten legs” (Deca indicating ten and pod meaning foot. The suborder
Nantia refers to shrimp. The family Hippolytidae are the “cleaner” shrimp. There appears no
Latin or Greek root for Nantia and Hippolytidae appears to be a combination of hippo meaning
“horse” and ly another word for loose, and idae being a standard suffix for an animal, although
generally used on family designations.