Red Cherry Shrimp are omnivorous detritivores that thrive on algae, biofilm, and detritus, with blanched vegetables and invertebrate pellets as ideal supplemental foods.
One wrong meal sends a tank into a crisis. Red Cherry Shrimp (Neocaridina davidi) are nature’s cleanup crew, grazing constantly on what grows naturally in a mature aquarium. Most owners find that a well-planted tank with established surfaces provides enough food without extra effort. When you do supplement, the right choices keep shells hard, colors bright, and water safe.
What They Actually Eat In A Home Aquarium
Cherry shrimp eat almost anything organic that stays still long enough. Their primary food source in most tanks is biofilm — the thin layer of microorganisms, algae, and bacteria that coats every surface. They also scrape soft algae off glass, plants, and hardscape, and pick through detritus (decaying plant matter and leftovers).
This constant foraging is why they make such effective cleanup in a peaceful community tank. When natural food runs low, or you want to boost color and growth, offer any of these:
- Blanched vegetables — spinach, zucchini, cucumber, carrots, peas
- Sinking invertebrate pellets or wafers — Hikari Crab Cuisine, algae wafers, Shrimp King pellets
- Crushed flake fish food or specialized shrimp powders
- Frozen or dried protein — bloodworms, brine shrimp, daphnia
- Botanicals — Indian almond leaves, oak leaves, soaked mulberry leaves
- Snowflake (soaked soybean husks) for calcium and grazing surface
- Cuttlebone for additional calcium
They also eat their own molted exoskeletons to recycle calcium into new shells. Never remove a molt — it is a free nutrient source.
How Often To Feed And How Much
Feed only enough that the shrimp clean up within 2–3 hours. Overfeeding is the single fastest way to poison a shrimp tank — uneaten food rots into ammonia and nitrate that kills the whole colony.
Frequency depends on your tank’s natural food supply:
- Tank with established algae and biofilm: Supplemental feeding 1–2 times per week or not at all
- Bare tank or new setup: Once per day, small portions
- High-protein foods (bloodworms, brine shrimp): Once per week maximum
- Vegetables: Remove any leftovers within 2–3 hours
Blanching Vegetables The Right Way
Raw vegetables are too tough for shrimp to tear. Blanching softens them without losing nutrients. Leafy greens like spinach need about 1 minute in boiling water. Dense vegetables like zucchini or carrots need 2–3 minutes. Let them cool, sink them to the bottom, and pull any remainder after a few hours.
Never leave rotting vegetables in the tank overnight. A piece of zucchini that sits for 8 hours can spike ammonia levels enough to stress the entire colony.
How To Feed Baby Shrimp
Shrimplets have tiny mouths and cannot handle full-size pellets. Crush any wafer or pellet into a fine powder before adding it. Specialized products like Bacter AE or Snowflake dissolve into particles small enough for babies to graze on. Without fine food, young shrimp may not get enough nutrition to molt successfully.
The Silent Killer: Copper In Food
Check every ingredient label before feeding. Any food or medication containing copper sulfate is lethal to shrimp — even trace amounts. Many fish flake foods and general aquarium pellets contain copper as a preservative or parasite treatment. Stick to foods labeled for invertebrates or shrimp to stay safe.
If you keep shrimp with fish, feed the fish copper-free food too. A pellet that falls to the bottom and gets eaten by a shrimp can kill it within hours.
What About Water Parameters And Shell Health?
Shrimp cannot build healthy shells without hard water. Target a pH of 7.0–8.0 and general hardness of 3–10 dGH. Very soft water causes failed molts and deaths. If your tap water is soft, add cuttlebone or use a remineralizer for shrimp-specific water. A 20-liter minimum tank with weekly 15–20% water changes keeps conditions stable.
| Food Type | Examples | Frequency |
|---|---|---|
| Blanched Vegetables | Spinach, zucchini, carrot, cucumber, peas | 1–2 times per week; remove after 2–3 hours |
| Shrimp Pellets & Wafers | Hikari Crab Cuisine, Shrimp King, algae wafers | Daily if no biofilm; 1–2 times per week if established tank |
| Protein Treats | Frozen bloodworms, brine shrimp, daphnia | Once per week |
| Botanicals | Indian almond leaves, oak leaves, mulberry leaves | Leave in tank until consumed; replace when gone |
| Calcium Sources | Cuttlebone, own molts | Always available; never remove molts |
| Baby Food | Bacter AE, Snowflake, crushed pellets | Small pinch daily until colony is eating |
| Crushed Flakes | Any copper-free fish flake, crushed | Occasional; only as much as eaten in 2–3 hours |
Foods That Enhance Red Coloration
Carotenoid-rich foods intensify the red pigmentation that makes Cherry Shrimp popular. Spirulina-based wafers, blanched carrots, and specialized color-enhancing shrimp pellets provide natural pigments. Consistent access to these foods over several weeks produces noticeably brighter shrimp. The effect fades if the diet shifts to plain foods.
For a complete list of tested foods and owner favorites, check out our cherry shrimp food product roundup that breaks down what works best for different budgets and tank setups.
Five Common Feeding Mistakes To Avoid
- Overfeeding: The number-one killer. Feed less than you think; shrimp are tiny and need remarkably little.
- Copper exposure: Never assume a fish food is safe. Read every ingredient list.
- Leftovers in the tank: Blanched vegetables and pellets left overnight rot fast. Set a timer to remove them.
- Soft water neglect: Cherry shrimp need hard water for shell health. Test your GH and adjust if needed.
- Large food for babies: Crush pellets for shrimplets or use a fine powder. They cannot break down whole pieces.
| Problem | Cause | Fix |
|---|---|---|
| Shrimp stop grazing | Overfed; tank has too much detritus | Skip feeding for 2–3 days; remove uneaten food |
| Failed molts; dead shrimp | Water too soft; low calcium | Test GH; add cuttlebone or remineralizer |
| Sudden deaths after feeding | Copper in food or medication | Switch to invertebrate-specific food; water change |
| Baby shrimp not growing | Food particles too large | Crush pellets or use Bacter AE powder |
FAQs
Can Cherry Shrimp eat regular fish flakes?
Yes, as long as the flakes contain no copper sulfate. Crush them into smaller pieces first to make handling easier. Stick to brands formulated for invertebrates when possible, and feed fish-only flakes sparingly because they lack the calcium shrimp need.
Do Cherry Shrimp need vegetables every day?
No. A tank with established algae and biofilm provides all the food they need most days. Blanched vegetables once or twice per week are plenty. Daily vegetables encourage overfeeding and water quality problems.
Will Cherry Shrimp eat dead plants or leaves?
Yes, they graze on decaying plant matter as part of their natural detritivore diet. Indian almond leaves and oak leaves are excellent additions that also release beneficial tannins into the water.
How long can Cherry Shrimp go without food?
In an established tank with biofilm and algae, they can go a week or more without supplemental feeding. A vacation of 7–10 days is usually fine. Bare quarantine tanks need daily small feedings.
Does food color affect Cherry Shrimp color?
Yes. Carotenoid-rich foods like spirulina wafers and blanched carrots enhance red pigmentation over several weeks. Without these pigments, shrimp may appear paler, especially after molting.
References & Sources
- The Shrimp Farm. “Cherry Shrimp Feeding Guide.” Covers algae-based diet, vegetable blanching, and copper warnings.
- Hygger Online. “What Do Freshwater Aquarium Shrimp Eat?” Describes biofilm, algae, and live food as primary diet.
- Tropical Fish Hobbyist Magazine. “Red Cherry Shrimp.” Details omnivorous nature and algae wafer use.
- Flip Aquatics. “Cherry Shrimp Guide.” Explains water parameters, overfeeding risks, and diet balance.
- Hikari. Crab Cuisine Product Page. Official manufacturer information for recommended shrimp food.
Mo Maruf
I created WellFizz to bridge the gap between vague wellness advice and actionable solutions. My mission is simple: to decode the research and give you practical tools you can actually use.
Beyond the data, I am a passionate traveler. I believe that stepping away from the screen to explore new environments is essential for mental clarity and physical vitality.