Add fish with the “+ Add” buttons below to see if they will work together in your tank.
3 Gallon / 11 Liter
6 groups fit
Assumes the standard 22 × 22 cm footprint. Dimensions matter more than volume, so if your tank is shorter, enter its dimensions above.
Fish
Pygmy Sunfish
7 species
Alabamae(Elassoma alabamae)11 L · 22 cm
Solitary
~10–25°C · ~6–16 dGH · ~pH 6–7.5
Boehlkei(Elassoma boehlkei)11 L · 22 cm
Solitary
10–25°C · 6–16 dGH · pH 5.5–7.2
Evergladei(Elassoma evergladei)11 L · 22 cm
Solitary
10–30°C · 3–15 dGH · pH 6–8
Gilberti(Elassoma gilberti)11 L · 22 cm
Solitary
15–24°C · 5–12 dGH · pH 6.5–7.5
Okatie(Elassoma okatie)11 L · 22 cm
Solitary
10–23°C · 6–16 dGH · pH 6.5–7.5
Okefenokee(Elassoma okefenokee)11 L · 22 cm
Solitary
4–30°C · 6–20 dGH · pH 6–8
Colonies permissible in extremely dense tanks
Require Live Food
Require a very heavily planted tank
Invertebrates
Clams/Mussels
1 species
Clams/Mussels(Anodonta anatina)11 L · 22 cm
Solitary or Groups
22–28°C · 8–10 dGH · pH 6.5–8
Crabs
2 species
Pom Pom(Ptychognathus barbatus)11 L · 22 cm
Solitary or Groups
~22–27°C · ~8–12 dGH · ~pH 6.5–7.5
Very difficult to keep
Thai Micro(Limnopilos naiyanetri)COMMON11 L · 22 cm
Solitary or Groups
22–26°C · 8–12 dGH · pH 7.2–8
Scuds
1 species
Scuds(Hyalella azteca)11 L · 22 cm
Group
10–26°C · 8–18 dGH · pH 6.5–8.5
Can be kept in smaller tanks
Shrimp
7 species
Amazon Zebra(Euryrhynchus amazoniensis)11 L · 22 cm
Group
~3–10 dGH · ~pH 5–6
Caridina(Caridina multidentata)COMMON11 L · 22 cm
Group
18–27°C · 6–10 dGH · pH 6–7.5
Fairy11 L · 22 cm
Group
~3–10 dGH · ~pH 7–8
Fairy Shrimp can be kept in Smaller Tanks
Ghost(Palaemonetes paludosus)COMMON11 L · 22 cm
Group
20–29°C · 3–10 dGH · pH 7–8
Halocaridina/Opae Ula(Halocaridina rubra)BRACKISH11 L · 22 cm
Group
22–28°C · 2–15 dGH · pH 7.5–8
Neocaridina/Cherry(Neocaridina heteropoda)COMMON11 L · 22 cm
Group
22–28°C · 8–12 dGH · pH 6.4–8.4
Snails
8 species
Assassin(Anentome helena)COMMON11 L · 22 cm
Solitary or Groups
23–27°C · 8–15 dGH · pH 7.2–8
Actively eat other snails, eggs, and recently molted invertebrates
Bladder(Physa acuta)COMMON11 L · 22 cm
Solitary or Groups
18–25°C · 6–12 dGH · pH 7.2–8.5
Hairy(Thiara cancellata)11 L · 22 cm
Solitary or Groups
22–26°C · 8–15 dGH · ~pH 7–8
Limpet Nerite(Septaria porcellana)11 L · 22 cm
Solitary or Groups
23–28°C · 8–15 dGH · ~pH 7–8
Malaysian Trumpet(Melanoides tuberculata)COMMON11 L · 22 cm
Solitary or Groups
18–30°C · 6–15 dGH · pH 7–8
Mud11 L · 22 cm
Solitary or Groups
~8–15 dGH · ~pH 7–8
All except Assassin, Limpet Nerite, & Hairy Reproduce Asexually
The stocking planner tells you if your tank plan can work, but it cannot say how hard it will be to maintain.
To figure out what it will actually take to keep your tank healthy long term given your specific tank setup, water type, environment, etc. you can run your tank through the simulator.
