Freshwater Shrimp at a Glance
Neocaridina (Cherry) shrimp are the best starting point; Caridina (Crystal, Bee) reward experienced keepers with stunning coloration.
Ease of Care by Shrimp Type
Water Parameters: Neocaridina vs Caridina
| Parameter | Neocaridina | Caridina (Crystal/Bee) |
|---|---|---|
| pH Range | 6.5-8.0 | 5.8-6.8 |
| GH (dGH) | 4-14 | 4-6 |
| KH (dKH) | 3-8 | 0-2 |
| TDS (ppm) | 150-300 | 100-150 |
| Temp °F | 65-85 | 68-78 |
| Tank Age | 3+ months | 6+ months |
| Breeding Difficulty | Easy | Moderate-Hard |
Shrimp Keeping Rules
| Cycle tank fully before adding shrimp (no ammonia/nitrite) | |
| Drip acclimate for 45+ minutes when introducing shrimp | |
| Provide moss, leaves, and biofilm for grazing | |
| Use sponge filters or pre-filter intakes to protect shrimplets | |
| Feed sparingly — shrimp thrive on biofilm, not excess food | |
| Use any fish medication containing copper — it's lethal | |
| Add shrimp to a tank less than 3 months old | |
| Make sudden parameter changes — drip everything | |
| Keep with large cichlids, loaches, or aggressive fish |
Copper is shrimp-kryptonite. Check all plant fertilizers, fish meds, and tap water conditioners for copper sulfate before adding shrimp to a tank.
The 'redder the better' rule for Neocaridina: deepen red coloration with high-quality foods containing astaxanthin (Bacter AE, Spirulina-based foods).
Freshwater dwarf shrimp have become one of the most popular specializations in the aquarium hobby -- they're fascinating to watch, available in dozens of color morphs, genuinely useful for algae and biofilm control, and small enough that a 5-gallon nano tank can support a thriving colony. The two main genera for hobbyists are Neocaridina (easier, forgiving of water parameters) and Caridina (more sensitive, more exotic, more rewarding to breed).
| Parameter | Neocaridina | Caridina | Notes |
|---|---|---|---|
| pH | 6.8–7.8 | 5.8–6.8 | Caridina requires RO water |
| Temperature | 65–78°F | 65–72°F | Caridina crashes above 76°F |
| TDS | 150–250 ppm | 90–130 ppm | Lower TDS for Caridina |
| GH | 6–8 | 4–6 | Use dedicated remineralizer for Caridina |
Neocaridina: The Beginner Genus
Neocaridina davidi produces the most popular color morphs in the hobby: red cherry shrimp, blue dream, yellow neon, green jade, chocolate, and many others. All are the same species with different color genetics -- they'll interbreed and produce offspring that lose selective coloration (typically reverting toward brown/wild type) if different color morphs are mixed. Keep color morphs separate to maintain breeding populations.
Neocaridina care parameters: pH 6.8-7.8, temperature 65-78F, TDS 150-250 ppm, GH 6-8, KH 2-4. They're tolerant of moderate variation and are well-suited to typical tap water in most municipalities after dechlorination. Shrimp are extremely sensitive to copper -- trace amounts in tap water or medications cause rapid mortality. Use a copper test if adding shrimp to a tank with unknown water source or treatment history.
Caridina: Softer Water, More Complexity
Crystal red shrimp (CRS), crystal black shrimp (CBS), and Taiwan Bees (King Kong, Panda, Red Wine, etc.) are Caridina cantonensis varieties bred for elaborate banding and color patterns. Caridina are significantly more demanding of water parameters: pH 5.8-6.8, temperature 65-72F (they crash above 76F), TDS 90-130 ppm, GH 4-6, KH 0-1. These parameters require RO water remineralized with Caridina-specific mineralizer (Salty Shrimp GH+, similar products).
The investment is higher -- reverse osmosis unit or pre-made RO water, specific substrate (ADA Amazonia, Fluval Stratum -- active substrates that maintain low pH), and precise monitoring. The reward: shrimp that are genuinely beautiful by any standard, with complex patterns and grades (grading refers to the distinctness and extent of coloration -- SS grade CRS command $15-50+ per shrimp).
Setup Essentials
Cycled tank: nitrogen cycle must be complete before adding any shrimp. Shrimp are more sensitive to ammonia and nitrite than most fish. Sponge filters are preferred -- they provide biological filtration without suction risk (shrimp get pulled into power filter intakes and die). Hang-on-back filters can be used with fine mesh pre-filters over the intake. Fine or plant substrate provides surface area for biofilm growth -- shrimp constantly graze biofilm from all surfaces. Live plants (java moss, moss balls, subwassertang, bucephalandra) provide additional grazing surfaces and hiding spots during molting.
Feeding
Shrimp are omnivorous scavengers. In a planted, cycled tank with biofilm-covered surfaces, supplemental feeding can be minimal -- 2-3 times weekly is sufficient. Specialized shrimp foods (Bacter AE, Shrimp King products, Glasgarten Shrimp Dinner) provide varied nutrition. Blanched vegetables (zucchini, spinach, cucumber) are relished and provide calcium. Remove uneaten fresh food within 24 hours to prevent ammonia spikes. Overfeeding is a more common cause of shrimp death than underfeeding.
Molting and Death Issues
Shrimp molt as they grow -- the white shed exoskeleton should be left in the tank (provides minerals for the recently molted shrimp). Failed molts (shrimp stuck in old exoskeleton) often indicate mineral deficiency; check GH and supplement if needed. A group of shrimp dying suddenly suggests: ammonia spike, temperature spike, copper exposure, or a pesticide residue entering the tank via plants, tap water, or hands. The "death by molt" pattern (shrimp found dead after molting) indicates GH too low.
Sources: Shrimp Science (shrimpscience.com) care databases; Stroblberger R -- Neocaridina and Caridina taxonomy research; Sulawesi Shrimp care community guides; Planted Tank Forum shrimp keeping resources.