Melon Barb
Haludaria fasciata
- Care level
- Beginner
- Adult size
- 7 cm
- Minimum tank
- 81 litres
- Temperature
- 22–26 °C
All Species
1,268 species. Search by name, or refine by care needs.
Mendezi Dwarf Cichlid
Apistogramma mendezi
- Care level
- Intermediate
- Adult size
- 5 cm
- Minimum tank
- 40 litres
- Temperature
- 23–29 °C
Mercury Discus
Symphysodon aequifasciatus var. "Mercury"
- Care level
- Advanced
- Adult size
- 15–18 cm
- Minimum tank
- 350 litres
- Temperature
- 27–31 °C
Metal Guppy
Poecilia reticulata var. "Metal"
- Care level
- Beginner
- Adult size
- 3–6 cm
- Minimum tank
- 40 litres
- Temperature
- 17–28 °C
Mexican Tetra
Astyanax mexicanus
- Care level
- Beginner
- Adult size
- 9.5 cm
- Minimum tank
- 72 litres
- Temperature
- 20–25 °C
Miniature Pencilfish
Nannostomus anduzei
- Care level
- Intermediate
- Adult size
- 1.6 cm
- Minimum tank
- 40 litres
- Temperature
- 22–28 °C
Mirabilis Eartheater
Geophagus mirabilis
- Care level
- Advanced
- Adult size
- 14–20 cm
- Minimum tank
- 350 litres
- Temperature
- 24–29 °C
Moonlight Gourami
Trichopodus microlepis
- Care level
- Beginner
- Adult size
- 15 cm
- Minimum tank
- 81 litres
- Temperature
- 25–30 °C
Mosaic Guppy
Poecilia reticulata var. "Mosaic"
- Care level
- Beginner
- Adult size
- 3–6 cm
- Minimum tank
- 40 litres
- Temperature
- 17–28 °C
Moscow Guppy
Poecilia reticulata var. "Moscow"
- Care level
- Beginner
- Adult size
- 3–6 cm
- Minimum tank
- 40 litres
- Temperature
- 17–28 °C
Motoro Stingray
Potamotrygon motoro
- Care level
- Specialist
- Adult size
- 50 cm
- Minimum tank
- 1944 litres
- Temperature
- 24–26 °C
Mottled Ctenopoma
Ctenopoma weeksii
- Care level
- Intermediate
- Adult size
- 10 cm
- Minimum tank
- 68 litres
- Temperature
- 24–28 °C
Moustached Danio
Danio dangila
- Care level
- Specialist
- Adult size
- 10–15 cm
- Minimum tank
- 300 litres
- Temperature
- 18–26 °C
Multicolour Betta
Betta splendens var. "Multicolour"
- Care level
- Beginner
- Adult size
- 5–7 cm
- Minimum tank
- 40 litres
- Temperature
- 22–30 °C
Multispinis Peckoltia L049
Peckoltia multispinis
- Care level
- Intermediate
- Adult size
- 9–12 cm
- Minimum tank
- 90 litres
- Temperature
- 24–29 °C
Munduruku Plecostomus L361
Hopliancistrus munduruku
- Care level
- Advanced
- Adult size
- 11.2–15 cm
- Minimum tank
- 100 litres
- Temperature
- 25–30 °C
Murray River Rainbowfish
Melanotaenia fluviatilis
- Care level
- Beginner
- Adult size
- 10 cm
- Minimum tank
- 81 litres
- Temperature
- 20–25 °C
Mustard Gas Betta
Betta splendens var. "Mustard Gas"
- Care level
- Beginner
- Adult size
- 5–7 cm
- Minimum tank
- 40 litres
- Temperature
- 22–30 °C
Myer’s Hillstream Loach
Pseudogastromyzon myersi
- Care level
- Specialist
- Adult size
- 4.9–7 cm
- Minimum tank
- 80 litres
- Temperature
- 18–24 °C
Napo Corydoras
Gastrodermus napoensis
- Care level
- Advanced
- Adult size
- 3–4.5 cm
- Minimum tank
- 60 litres
- Temperature
- 22–27 °C
Neon Blue Guppy
Poecilia reticulata var. "Neon Blue"
- Care level
- Beginner
- Adult size
- 3–6 cm
- Minimum tank
- 40 litres
- Temperature
- 17–28 °C
Neon Blue Rasbora
Sundadanio axelrodi
- Care level
- Intermediate
- Adult size
- 2.2 cm
- Minimum tank
- 12 litres
- Temperature
- 23–26 °C
Neon Borneo Sucker
Gastromyzon lepidogaster
- Care level
- Specialist
- Adult size
- 4.2–6 cm
- Minimum tank
- 60 litres
- Temperature
- 20–25 °C
Neon Green Rasbora
Microdevario kubotai
- Care level
- Intermediate
- Adult size
- 2 cm
- Minimum tank
- 54 litres
- Temperature
- 20–27 °C
Neon Tetra
Paracheirodon innesi
- Care level
- Beginner
- Adult size
- 2.5–3 cm
- Minimum tank
- 55 litres
- Temperature
- 21–25 °C
Nijssen’s Corydoras
Gastrodermus nijsseni
- Care level
- Advanced
- Adult size
- 3–4.5 cm
- Minimum tank
- 60 litres
- Temperature
- 22–27 °C
Ninja Shrimp
Marosina serratirostris
- Care level
- Advanced
- Adult size
- 2–3.5 cm
- Minimum tank
- 20 litres
- Temperature
- 22–27 °C
Niveatus Plecostomus L026
Baryancistrus niveatus
- Care level
- Advanced
- Adult size
- 18.8–25 cm
- Minimum tank
- 250 litres
- Temperature
- 26–31 °C