Rhino Shrimp

Caridina serratirostris

Also known as Ninja Shrimp, Saw-Nose Shrimp

Animalia›Arthropoda›Malacostraca›Decapoda›Atyidae

The Rhino Shrimp is a striking freshwater shrimp characterized by its prominent rostrum (nose-like snout) and robust body coloration, typically displaying brown, tan, or reddish hues with darker banding patterns. This species is named for its distinctive elongated, serrated rostrum that resembles a rhino's horn, making it instantly recognizable among Caridina varieties. The Rhino Shrimp is a hardy, active grazer that brings both visual interest and algae-control benefits to planted aquariums.

Where it's from

Native to Indonesia

Recorded as introduced in Norway

At a glance

Size: 1.5 in; 4 cm
Min tank: 10 gal; 38 L
Group: 8+
Temp: 75–82°F; 24–28°C
pH: 6.5-7.5
GH: 107–179 ppm; 6–10 dGH
Temperament: Peaceful
Swims: Bottom
Lifespan: 2-3 yrs

Ammonia 0 ppm and nitrate under 20 ppm.

Care

Diet

Rhino Shrimp are primarily detritivores that graze on biofilm, algae, and decaying plant matter. Supplement with high-quality shrimp pellets (Shirakura, Mosura), blanched spinach, zucchini, and occasional protein sources like dried spirulina. Feed small amounts 2-3 times weekly; uneaten food should be removed within 24 hours.

Behavior

Rhino Shrimp are active bottom-dwellers that spend most of their time grazing and exploring substrate and plants. They are relatively social and can be kept in small groups without aggression, though males may display minor territorial posturing. Molting occurs every 4-6 weeks; provide plenty of hiding spots and stable water parameters during this vulnerable period.

Breeding

Rhino Shrimp breed readily in established tanks with good water quality and stable parameters. Females produce small clutches of 20-30 shrimplets that are born fully-formed (no larval stage). Provide dense vegetation and biofilm-rich substrate to support juvenile survival; no special breeding setup is required, though slightly warmer temperatures (26-28 C) encourage reproduction.

Tank mates

See all 5

Otocinclus

Small, peaceful algae-eater that shares similar water parameters and does not prey on shrimp

excellent

Ember Tetra

Tiny, non-aggressive fish that occupy mid-water column and do not compete for bottom space

excellent

Chili Rasbora

Very small, peaceful schooling fish that pose no threat to adult or juvenile shrimp

excellent

Amano Shrimp

Larger shrimp species; may compete for food but generally coexist peacefully in established colonies

good

Ghost Shrimp

Compatible tank mate; monitor for aggression if space is limited, as Ghost Shrimp can be territorial

good

No state or federal restrictions on record.

Not legal advice, and possibly incomplete or out of date. Rules vary by state and change over time; check with your state wildlife or agriculture agency before buying, keeping or shipping it.

The care information here is written with AI help, so it can contain mistakes. Spot one? Tell us and we'll fix it. Native range: World Register of Marine Species (CC BY 4.0); Global Register of Invasive and Introduced Species (CC BY 4.0).