Shrimp eggs vs snail eggs: how to tell what's in your tank
Find eggs in a shrimp tank and the first question is whether to celebrate or reach for a scraper. The answer is usually simple, because dwarf shrimp never stick their eggs to anything. This guide shows how to tell shrimp eggs from the eggs of the snails that commonly share shrimp tanks, and what to do about each.
Eggs at a glance
| What you see | Where | Probably | What to do |
|---|---|---|---|
| Round eggs in a cluster, often yellow, green or orange | Under a female shrimp's abdomen | Shrimp eggs (a berried female) | Leave her alone; see berried shrimp care |
| A few loose single eggs | On the substrate or moss | Dropped shrimp eggs | Usually lost; she will often try again |
| Clear, jelly-like blobs or strips with small dots inside | Glass, undersides of leaves, decor | Bladder or ramshorn snail eggs | Scrape off if you don't want more snails |
| Hard white dots about 1 mm, scattered singly | Rocks, wood, glass, equipment | Nerite snail eggs | Harmless; scrape off if you dislike the look |
| A cluster of larger round eggs, tan, pink or white | Above the waterline: lid, rim or glass | Mystery (apple) snail clutch | Remove it before it hatches unless you want more |
| No eggs, but baby snails appear | In the substrate | Malaysian trumpet snails | They brood their young internally |
What shrimp eggs look like
A female carrying eggs is called berried. UF/IFAS explains that cherry shrimp hold their eggs on the pleopods, the small swimming legs under the abdomen, and use them to clean the eggs so they don't grow fungus. You'll see the eggs as a cluster of small beads under the tail, and the female fanning them constantly. UF/IFAS gives an incubation time of 16 to 19 days and a clutch of 43 to 60 eggs (citing Pantaleão and colleagues, 2015). Keepers commonly report that the eggs darken as they develop and that tiny eyes may show near the end.
Before mating, the developing eggs show through the shell behind the head as a colored patch called a saddle. That isn't a clutch yet; see how to breed cherry shrimp.
Cherry shrimp have no larval stage, according to UF/IFAS: the eggs hatch into miniature shrimp about 1 to 2 mm long. Amano and ghost shrimp females also carry eggs under the tail, but their young hatch as larvae; Amano larvae need brackish to salt water to develop; see Amano shrimp care and ghost shrimp care.
Bladder and ramshorn snail eggs
These are the eggs most people find by surprise. Practical Fishkeeping notes that small, clear eggs on the undersides of plant leaves are often difficult to spot and may take up to a month to hatch, so you may not notice the young at first. USGS says an acute bladder snail (Physella acuta) can lay 50 to 100 eggs a week for up to a year after maturing, and can fertilize itself, so a single snail is enough to start a population.
- Look: a clear, jelly-like patch or strip with small round eggs inside, stuck flat to glass, leaves or decor underwater. Keepers commonly describe ramshorn clutches as rounder and firmer, and bladder snail clutches as softer and more irregular.
- Where they come from: Practical Fishkeeping says most aquarium snails arrive on plants, and they can travel as eggs in the water with new livestock.
- What to do: scrape clutches off the glass and pick off leaves that carry them. Numbers depend on food, so feed less; see pest snails in a shrimp tank. Never use snail-killing treatments in a shrimp tank, as many contain copper, which is toxic to shrimp; see is copper toxic to shrimp.
Nerite snail eggs
The little white dots on rocks and wood in many shrimp tanks are nerite eggs. In NANFA's American Currents, Missouri State University biologist Chris Barnhart describes nerite females laying white egg capsules about one millimeter long, each containing many eggs, and notes that aquarists report the eggs fail to survive in fresh water. Because the eggs don't develop in fresh water, nerites won't overrun a freshwater tank.
- Look: hard, white, sesame-seed-like dots, laid one at a time and often scattered across hardscape and glass.
- What to do: nothing, unless you dislike the look. They are hard to scrape off rough wood and rock; on glass a plastic scraper or razor blade works. See nerite and mystery snails with shrimp.
Mystery and apple snail eggs
Mystery snails sold in the U.S. are usually spike-topped applesnails (Pomacea diffusa). The U.S. Fish and Wildlife Service says females lay a clutch of 200 to 600 eggs, each about 3 mm across, above the water surface on plants or other hard surfaces, and that the young fall into the water when they hatch. It describes P. diffusa eggs as tan to salmon. The Florida Fish and Wildlife Conservation Commission notes that the invasive island and channeled apple snails lay pink eggs, and that apple snail eggs turn white or gray before hatching.
- Look: a raised cluster of round eggs on the lid, the rim or the glass just above the water.
- What to do: if you don't want baby snails, remove the clutch before it hatches and dispose of it in the trash. Never release snails or their eggs outdoors; apple snails are invasive in Florida, and FWC notes that federal law prohibits moving apple snails across state lines.
Snails that don't leave eggs
Malaysian trumpet snails (red-rim melania) give birth to live young: USGS says they brood their young internally and can reproduce without a mate. You won't find clutches, just more small snails in the substrate; see pest snails.
Not eggs at all?
Tiny white specks that move are usually critters rather than eggs; see white worms and other tiny critters, planaria and hydra. White fuzz on new wood is a harmless fungus; see driftwood and botanicals.
Track it
Note when a female becomes berried and when the shrimplets appear on the free Water Parameter Log printable, along with any snail clutches you remove.
Frequently asked questions
How do I tell shrimp eggs from snail eggs?
Shrimp carry their eggs under the female's tail until they hatch. Eggs stuck to glass, plants, wood or the lid are snail eggs.
Do shrimp lay eggs on plants or glass?
No. Dwarf shrimp such as cherry shrimp hold their eggs on their swimming legs under the abdomen until they hatch.
What are the clear jelly blobs on my aquarium glass?
Usually bladder or ramshorn snail egg clutches. Scrape them off if you don't want more snails, and feed less.
What are the white dots on the rocks in my shrimp tank?
If you keep nerite snails, they are almost certainly nerite eggs. They don't survive in fresh water, so nerites won't overrun the tank.
What are the eggs above the waterline in my tank?
Usually a mystery or apple snail clutch. Remove it before it hatches if you don't want baby snails, and never release them outdoors.
How long do shrimp eggs take to hatch?
UF/IFAS gives 16 to 19 days for cherry shrimp; keepers commonly report about three to four weeks, faster in warmer water.
Will snails eat shrimp eggs?
Healthy berried females keep their eggs under the tail, out of reach of grazing snails. Dropped eggs on the substrate may be eaten by anything in the tank.
Sources: UF/IFAS EDIS, Cherry Shrimp Neocaridina davidi (IN1301) (eggs held on the pleopods, which clean them to prevent fungus; incubation 16 to 19 days; 43 to 60 eggs, citing Pantaleão et al. 2015; no larval stage, young 1 to 2 mm); Practical Fishkeeping, How do I deal with aquarium snails? (most snails arrive on plants, some as eggs in water with fish; small clear eggs on the undersides of leaves are hard to spot and may take up to a month to hatch); USGS Nonindigenous Aquatic Species, Physella acuta (acute bladder snail) (hermaphroditic, can self-fertilize; 50 to 100 eggs each week for up to a year after maturity); USGS Nonindigenous Aquatic Species, Melanoides tuberculata (red-rim melania) (broods young internally; can reproduce parthenogenetically); Chris Barnhart, The Perfect Marine Snail for Your Freshwater Aquarium, American Currents (NANFA), 2006 (nerite females lay white egg capsules about 1 mm long containing many eggs; aquarists report the eggs fail to survive in fresh water); U.S. Fish and Wildlife Service, Spike-topped Applesnail (Pomacea diffusa) Ecological Risk Screening Summary (2025) (P. diffusa lays 200 to 600 eggs, each about 3 mm, above the water surface; young fall into the water; eggs tan to salmon); Florida Fish and Wildlife Conservation Commission, Snails (apple snails lay eggs above the waterline; island and channeled apple snail eggs pink, turning white or gray before hatching; federal law prohibits moving apple snails across state lines). Descriptions of ramshorn vs bladder clutches, egg darkening and nerite egg removal are hobby references and recurring owner reports; Shrimp Tank Hub's Amano shrimp guide covers Amano larvae.