Siamese Fighting Fish

Betta splendens

One of the most popular aquarium fish, known for flowing fins and labyrinth breathing. Best kept alone or with peaceful tankmates.

Care Parameters

Adult size

6.5 cm

Min tank

20 L

Temperature

24–28°C

6–7.5

5–20 dGH

Diet

Carnivore

Temperament

Peaceful

Water zone

Middle

Difficulty

Beginner

Schooling

Keep solitary — males fight each other.

Suitable Plants

Duckweed

The smallest flowering plant — a tiny floating fern that doubles its coverage in days. Excellent nutrient absorber but extremely difficult to remove once established. Use with caution.

Anacharis

Care profile for Anacharis: low light, none CO₂, beginner difficulty.

Bacopa caroliniana

A hardy, straightforward stem plant with thick, oval leaves on upright stems. One of the easiest background plants, tolerating a wide range of conditions and requiring minimal maintenance.

Ambulia

Care profile for Ambulia: medium light, low CO₂, beginner difficulty.

Red Rotala

Red stem plant. Turns red under high light with CO₂.

Compatible Invertebrates

Blue Tiger Shrimp

A selectively bred freshwater shrimp with striking deep blue coloration. Requires soft, acidic water and careful parameter maintenance. Prized by shrimp collectors.

Ghost Shrimp

A see-through, feather-light scavenger sold by the handful. Tough across 3-15 dGH and a wide temperature band. Beware mislabeled tankmates: true Ghost Shrimp is Palaemon paludosus, while the larger, more predatory Macrobrachium species are often sold under the same name.

Vampire Crab

A small, semi-terrestrial crab with striking purple coloration and bright yellow eyes. Requires a paludarium setup with both land and water areas.

Zebra Nerite Snail

A striped, hard-working algae grazer that never overpopulates: its eggs are laid all over the glass but only hatch in brackish water, so they simply stay put. Prefers harder water (GH 6-20 dGH) with calcium for a healthy shell; watch for escapes, as it can climb out of open tanks.