Aquarium Fish Database

Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.

Beginner – Intermediate

Scarlet Shiner

Lythrurus fasciolaris

Adult size
up to 9 cm
Aquarium size
120 L or larger
Temperament
Peaceful
Zone
Middle swimmer
Temp
18–22 °C
Intermediate – Advanced

Schistura spilota

Schistura spilota

Adult size
up to 10 cm
Aquarium size
200 L or larger
Temperament
Semi-Aggressive
Zone
Bottom dweller
Temp
20–26 °C
Beginner – Intermediate

Schlesers Longfin Killifish

Aphyolebias schleseri

Adult size
up to 5 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
22–26 °C
Beginner – Intermediate

Schmard Tetra

Hemigrammus schmardae

Adult size
up to 5 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
23–27 °C
Beginner – Intermediate

Schwartzs Corydoras

Corydoras schwartzi

Adult size
up to 7 cm
Aquarium size
100 L or larger
Temperament
Peaceful
Zone
Bottom dweller
Temp
22–26 °C
Beginner – Intermediate

Scratched Inpa Tetra

Inpaichthys parauapiranga

Adult size
up to 4 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
22–26 °C
Intermediate

Senegal Minnow

Raiamas senegalensis

Adult size
up to 25 cm
Aquarium size
300 L or larger
Temperament
Peaceful
Zone
Middle swimmer
Temp
22–26 °C
Beginner – Intermediate

Sentani Rainbowfish

Chilatherina sentaniensis

Adult size
up to 12 cm
Aquarium size
120 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
24–29 °C
Beginner

Serpae Tetra

Hyphessobrycon eques

Adult size
up to 6 cm
Aquarium size
80 L or larger
Temperament
Peaceful
Zone
Middle swimmer
Temp
22–26 °C
Intermediate

Serpent Loach

Serpenticobitis octozona

Adult size
up to 6 cm
Aquarium size
60 L or larger
Temperament
Peaceful
Zone
Bottom dweller
Temp
23–26 °C
Intermediate

Severum Cichlid-Heros efasciatus

Heros efasciatus

Adult size
up to 30 cm
Aquarium size
300 L or larger
Temperament
Peaceful
Zone
Middle swimmer
Temp
24–29 °C
Intermediate

Severum Cichlid-Heros severus

Heros severus

Adult size
up to 20 cm
Aquarium size
240 L or larger
Temperament
Peaceful
Zone
Middle swimmer
Temp
24–29 °C
Intermediate

Sharphead Eartheater

Satanoperca acuticeps

Adult size
up to 17 cm
Aquarium size
240 L or larger
Temperament
Peaceful
Zone
Middle swimmer
Temp
20–28 °C
Beginner – Intermediate

Shen’s River Loach

Hemimyzon sheni

Adult size
up to 5 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Bottom dweller
Temp
16–22 °C
Beginner – Intermediate

Short Ninespine Stickleback

Pungitius kaibarae

Adult size
up to 6.5 cm
Aquarium size
80 L or larger
Temperament
Peaceful
Zone
Bottom to middle swimmer
Temp
18–24 °C
Beginner – Intermediate

Siamese Algae Eater

Crossocheilus oblongus

Adult size
up to 15 cm
Aquarium size
160 L or larger
Temperament
Peaceful
Zone
Bottom dweller
Temp
24–27 °C
Beginner – Intermediate

Siamese Dwarf Rasbora

Trigonostigma somphongsi

Adult size
up to 2.5 cm
Aquarium size
30 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
21–26 °C
Beginner – Intermediate

Siamese Fighting Fish

Betta splendens

Adult size
up to 7 cm
Aquarium size
120 L or larger
Temperament
Semi-Aggressive
Zone
Top swimmer
Temp
24–27 °C
Intermediate – Advanced

Siamese Tigerfish

Datnioides microlepis

Adult size
up to 45 cm
Aquarium size
900 L or larger
Temperament
Semi-Aggressive
Temp
22–26 °C
Intermediate

Silver Dollar

Metynnis argenteus

Adult size
up to 15 cm
Aquarium size
160 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
24–28 °C
Beginner – Intermediate

Silver Flying Fox

Crossocheilus reticulatus

Adult size
up to 13 cm
Aquarium size
160 L or larger
Temperament
Peaceful
Zone
Bottom to middle swimmer
Temp
16–23 °C
Beginner – Intermediate

Silvertip Tetra

Hasemania nana

Adult size
up to 5 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
21–27 °C
Beginner – Intermediate

Silvery Black Tailed Tetra

Hemiodus immaculatus

Adult size
up to 25 cm
Aquarium size
300 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
24–28 °C
Intermediate – Advanced

Six Banded Distichodus

Distichodus sexfasciatus

Adult size
up to 75 cm
Aquarium size
900 L or larger
Temperament
Aggressive
Zone
Middle swimmer
Temp
22–26 °C
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