Bladder snails with thin glossy shells and a clear egg clutch on aquarium glass

Bladder Snails: Eggs, Good or Bad and How to Get Rid of Them

Quick answer: Bladder snails (Physella acuta, also called Physa acuta) are tiny freshwater snails with a thin, see-through, teardrop-shaped shell that opens on the left side. They grow to about 0.4 to 0.6 inches (1 to 1.5 cm), live a few months to about a year, and lay small, clear jelly egg clutches on glass and plants. Each snail is both male and female and can even fertilize itself, so one hitchhiker on a new Read more

Planaria flatworms with triangle heads gliding on aquarium glass near moss

Planaria in Aquarium: How to Identify, Remove and Prevent Them

Quick answer: Planaria are small free-living flatworms, usually 2 to 15 mm long, with a triangle-shaped head and two dark eyespots that make them look cross-eyed. They glide smoothly over the glass and substrate, and they’re white, gray or brown. In a fish-only tank they’re mostly a harmless nuisance, but in a shrimp tank they’re a real problem, because they eat baby shrimp, shrimp eggs, snail eggs and fish eggs, and can attack molting shrimp. Read more

Malaysian trumpet snails with pointed cone shells crawling on aquarium sand

Malaysian Trumpet Snails: Care, Good or Bad and How to Control Them

Quick answer: Malaysian trumpet snails (Melanoides tuberculata, also called red-rimmed melania or MTS) are small, cone-shaped freshwater snails that grow to about 1 inch (2.5 cm) in aquariums and live roughly 1 to 2 years. They spend the day buried in the substrate, eat leftover food, detritus and algae, and keep sand from compacting. They’re harmless to fish, shrimp and healthy plants. Most Malaysian trumpet snails reproduce without a mate and give birth to live Read more

Assassin snail with yellow and brown striped shell in a planted aquarium

Assassin Snail Care Guide: Diet, Eggs and Pest Snail Control

Quick answer: Assassin snails (Anentome helena, often sold as Clea helena) are small, striped freshwater snails that hunt and eat other snails. They grow to about 0.75 to 1 inch (2 to 2.5 cm), live 2 to 3 years, and do best at 72 to 82 F with pH 7 to 8 and hard water. They’re a natural way to control pest snails like ramshorn, bladder and Malaysian trumpet snails, and they breed slowly, so Read more

Red cherry shrimp on aquarium moss next to its clear molted shell

Shrimp Molting: How Often, Molt vs Dead and How to Fix Failed Molts

Quick answer: Shrimp molting is when a shrimp sheds its old hard shell (exoskeleton) so it can grow. Yes, all shrimp molt, and it’s a good sign. Young cherry shrimp molt about every 1 to 2 weeks and adults every 3 to 6 weeks, while Amano and ghost shrimp molt roughly every 4 to 6 weeks. A molt is a clear, empty, shrimp-shaped shell, while a dead shrimp is solid, turns pink, orange or white, Read more

Golden mystery snail with a tall spiral shell climbing in a planted freshwater aquarium

Mystery Snail Care: Size, Eggs, Tank Mates and Lifespan

Quick answer: Mystery snails (Pomacea diffusa) are peaceful freshwater apple snails that grow to about 2 inches (5 cm), live around 1 to 2 years, and do best at 68 to 82 F with pH 7.5 or higher and hard water for a strong shell. One snail needs about 5 gallons, they eat algae, leftovers and dead plant matter, and they’re safe with shrimp, most fish and healthy plants. Unlike ramshorns, they have separate sexes Read more

Red and blue ramshorn snails with flat coiled shells on a green aquarium plant leaf

Ramshorn Snail Care: Eggs, Plants and How to Control Them

Quick answer: Ramshorn snails are small, flat-coiled freshwater snails, usually under 1 inch (2.5 cm), that eat algae, leftover food and dying plant leaves. They live about 1 to 2 years, handle 64 to 80 F, need hard water with pH 7 to 8 for healthy shells, and come in red, pink, blue, leopard and brown. They’re safe with fish, shrimp and healthy plants. Most people get two things wrong. First, “ramshorn” is a group Read more