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Rhino Shrimp
Caridina serratirostris
📍 Indonesia (Sulawesi region)
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.
Care Guide
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
Small, peaceful algae-eater that shares similar water parameters and does not prey on shrimp
Tiny, non-aggressive fish that occupy mid-water column and do not compete for bottom space
Very small, peaceful schooling fish that pose no threat to adult or juvenile shrimp
Larger shrimp species; may compete for food but generally coexist peacefully in established colonies
Compatible tank mate; monitor for aggression if space is limited, as Ghost Shrimp can be territorial
Common Diseases
Molting Failure / Incomplete Molt
Shrimp unable to fully shed exoskeleton; stuck in old shell; lethargy; death if untreated
Ensure adequate mineral content (GH 6-10 dGH); add calcium-rich supplements (Salty Shrimp Mineral GH+); maintain stable pH and temperature; provide soft plants for grip during molt
Bacterial Infection / Septicemia
Discoloration, white spots on body, lethargy, loss of appetite, cloudy appearance
Perform 30% water change; increase aeration; maintain pristine water quality (0 ammonia, <20 ppm nitrate); remove affected individuals to quarantine; avoid antibiotics in main tank as they harm beneficial bacteria
Vorticella / Epistylis (Ciliate Infection)
White fuzzy coating on body and appendages; shrimp appears 'dusty'; reduced movement; difficulty eating
Increase water changes (50% every 2-3 days); add Indian almond leaves or alder cones for tannins; maintain optimal water parameters; ensure good filtration and avoid overcrowding; salt baths (1-2 tsp per gallon) for 10-15 minutes can help
Copper Toxicity
Sudden death or lethargy; loss of color; gasping at surface; tremors
AVOID all copper-based medications and fertilizers; use only copper-free plant fertilizers; perform immediate large water change (50%+); activated carbon in filter may help remove residual copper; copper is highly toxic to shrimp and crustaceans
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Quick Facts
- diet
- detritivore/omnivore; biofilm, algae, leaf litter, blanched vegetables, specialized shrimp pellets
- lifespan
- 2-3 years
- max size
- 3.5 cm (1.4 in)
- tank size
- 10 gallons minimum for small colony
- temperament
- peaceful
Water it likes
- ph
- 6.5-7.5
- ammonia
- 0 ppm
- nitrate
- <20 ppm
- hardness
- 6-10 dGH
- temperature
- 75–82°F (24–28°C)