Saltwater aquarium fish: M
All saltwater fish whose common name starts with M, in alphabetical order. Each card links to its care guide.
18 species and 4 varieties
Magenta dottyback
Pictichromis porphyrea
Saltwater2.4 in (6 cm) · 20 gal (75 L)72–79°F (22–26°C)
Magnificent foxface
Siganus magnificus
Saltwater9.1 in (23 cm) · 124 gal (470 L)75–81°F (24–27°C)
Majestic angelfish
Pomacanthus navarchus
Saltwater11.8 in (30 cm) · 145 gal (550 L)73–81°F (23–27°C)
Map puffer
Arothron mappa
Saltwater23.6 in (60 cm) · 238 gal (900 L)75–81°F (24–27°C)
Marine betta
Calloplesiops altivelis
Saltwater6.3 in (16 cm) · 55 gal (210 L)73–81°F (23–27°C)
Maroon clownfish
Premnas biaculeatus
Saltwater6.7 in (17 cm) · 40 gal (150 L)75–82°F (24–28°C)4 varieties
Maze angelfish
Chaetodontoplus cephalareticulatus
Saltwater11 in (28 cm) · 251 gal (950 L)72–79°F (22–26°C)
McCosker's flasher wrasse
Paracheilinus mccoskeri
Saltwater3.1 in (8 cm) · 55 gal (208 L)72–79°F (22–26°C)
Melanurus wrasse
Halichoeres melanurus
Saltwater5.5 in (14 cm) · 100 gal (380 L)72–79°F (22–26°C)
Midas blenny
Ecsenius midas
Saltwater5.1 in (13 cm) · 29 gal (110 L)72–79°F (22–26°C)
Milletseed butterflyfish
Chaetodon miliaris
Saltwater5.1 in (13 cm) · 75 gal (285 L)72–79°F (22–26°C)
Mimic tang
Acanthurus pyroferus
Saltwater11.4 in (29 cm) · 129 gal (490 L)75–82°F (24–28°C)
Miniatus grouper
Cephalopholis miniata
Saltwater17.7 in (45 cm) · 180 gal (680 L)72–79°F (22–26°C)
Molly Miller blenny
Scartella cristata
Saltwater4.7 in (12 cm) · 30 gal (114 L)72–79°F (22–26°C)
Moorish idol
Zanclus cornutus
Saltwater9.1 in (23 cm) · 125 gal (473 L)72–79°F (22–26°C)
Mozambique fangblenny
Meiacanthus mossambicus
Saltwater3.5 in (9 cm) · 29 gal (110 L)72–79°F (22–26°C)
Multibarred angelfish
Centropyge multifasciata
Saltwater4.7 in (12 cm) · 59 gal (225 L)72–79°F (22–26°C)
Multicolor angelfish
Centropyge multicolor
Saltwater3.5 in (9 cm) · 70 gal (265 L)75–81°F (24–27°C)
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