Beginner freshwater fish: M

All beginner freshwater fish whose common name starts with M, in alphabetical order. Each card links to its care guide.

11 species

Mafia killifish
Nothobranchius korthausae
Freshwater
2 in (5 cm) · 10 gal (38 L)72–79°F (22–26°C)
Maharaja barb
Puntius sahyadriensis
Freshwater
3.5 in (9 cm) · 29 gal (110 L)68–79°F (20–26°C)
Malayan harlequin rasbora
Trigonostigma truncata
Freshwater
1.2 in (3 cm) · 14 gal (54 L)72–81°F (22–27°C)
Martorell's barb
Enteromius martorelli
Freshwater
3.5 in (9 cm) · 24 gal (90 L)72–81°F (22–27°C)
Masked cory
Hoplisoma metae
Freshwater
2 in (5 cm) · 15 gal (55 L)70–79°F (21–26°C)
Masked julie
Julidochromis transcriptus
Freshwater
2.8 in (7 cm) · 20 gal (75 L)75–81°F (24–27°C)
Medaka
Oryzias latipes
Freshwater
1.4 in (3.5 cm) · 9 gal (35 L)61–72°F (16–22°C)
Merry widow livebearer
Phallichthys amates
Freshwater
2.5 in (6.4 cm) · 16 gal (60 L)72–86°F (22–30°C)
Metallic livebearer
Girardinus metallicus
Freshwater
2.4 in (6 cm) · 11 gal (40 L)72–81°F (22–27°C)
Miguelito cory
Brochis virginiae
Freshwater
2.4 in (6 cm) · 20 gal (75 L)72–79°F (22–26°C)
Multie shell dweller
Neolamprologus multifasciatus
Freshwater
1.8 in (4.5 cm) · 20 gal (75 L)75–81°F (24–27°C)

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