|Latin name||Ptereleotris heteroptera - (Bleeker, 1855)|
|Local name||Blacktail goby|
|Family||Microdesmidae - Ptereleotris|
|Origin||East Indian Ocean, West Indian Ocean, Australia, Japan, The Red Sea, Indonesia, East Pacific, Central/West Pacific|
|Max length||14 cm (5,5")|
|Minimum volume||100 cm (26 gal)|
|Suitable for aquarium||Suitable with care|
|Reef safe||Always reef safe|
Zooplankton (Cyclops, pods...)
Small crustaceans (Krill, mysis, artemia...)
This species is known to jump out of open aquaria.
This fish requires holes for hiding.
It is incapable of digging its own holes, so the reef keeper must provide sufficient hiding places.
3/4" PVC is ideal for these holes which should lead to a bigger chamber.
It is best if such a chamber has multiple exits.
These fish may well hide themselves for a while, whilst getting acclimatized.
Do not disturb the fish while acclimating because it will prolong the process.
This fish requires feeding several times a day, especially when newly added.
When the fish can find its natural food in the aquarium it requires less frequent feeding.
This species thrives best in a pair. (Male and female)
This species can function in large numbers down to just one.
This species is very shy and docile, so one should be careful when keeping it with more aggressive fish.
Dartfish (Microdesmidae) are recognized by their unique torpedo like shape. All Dartfish need hiding places where they can withdraw to when feeling threatened. They do not normally naturally dig their own holes, but use ones made by other creatures.
They are generally a popular aquarium fish, relatively easy to keep, so for a small tank with peaceful fish the Dartfish is the obvious choice.
They can easily feel threatened by larger more aggressive fish with the result that they cannot feed enough and die by lack of food. One has therefore a greater chance of success when they are kept with smaller, peaceful, fish.
After first introducing a Dartfish, it is advizable to dim the light, so it can get used to the tank in peace.
|Distribution||Indo-Pacific: Red Sea and East Africa to the Hawaiian, Line, Marquesas, and Society Islands, north to the Ryukyu Islands, south to Lord Howe Island; Mariana, Caroline, and Marshall Islands in Micronesia.|
|English common names||
Henry C. Schultz. 2003. Worms Not Found in the Sandbed: The Genus Ptereleotris - Reefkeeping Magazine - (English)
Daniel Pomfret. 2008. Let’s Play Darts! Marine Dartfish - Tropical Fish Hobbyist - (English)
Bob Fenner. Firefishes, Dartfishes, Wormfishes, Family Microdesmidae, Subfamily Ptereleotrinae - Wet Web Media - (English)
"Minimum volume" indicates the size of the tank needed to house this species under optimal conditions.
This is based on a medium size animal, which you want to keep for several years.
It might be possible to keep smaller specimens for a limited period in a smaller tank. A larger tank might be needed for fully-grown specimens.
"Hardiness" indicates how resistant this species is to disease and how well i tolerates bad conditions in general.
Some species doesn't handle transportation very well, but that doesn't mean that the species isn't hardy under the right conditions.
In this case, a "normal" aquarium is a reef aquarium with mixed corals or a fish only aquarium with an approximately salinity of 1.026 (sg) and a temperature close to 26°C.
Species requiring more than a 4000-liter tank are considered not suitable for home aquarium.
Special aquariums may cover tanks with low salinity, sub-tropical temperature, deep sand bed, sea grass etc.
Always reef safe: No sources indicate that this species will harm corals or other invertebrates.
Often reef safe: Only a few aquarists has reported problems keeping this species with corals and other invertebrates.
Reef safe with caution: This species may be a threat to some types of invertebrates.
Reef safe with luck: Most specimens will harm corals and/or other invertebrates, but you might be lucky.
Not reef safe: This species is a threat to most corals and/or other invertebrates.