Pictures
No pictures for this dive
-
Temp: Bottom 28°C
-
Dive type : Recreational, Muck Diving
-
Visibility: Average
Water: Salt
Recent Divers in Lembeh Strait
Recent Pictures in Lembeh Strait
Data provided by EOL.org
Species Identified
Rhinomuraena quaesita Garman, 1888 (Ribbon moray)
Occur in lagoon and seaward reefs. Secretive species normally hidden in sand or rubble, sometimes with only its head protruding. Feed on small fishes . Juveniles all black, males have yellow dorsal fin and females chang...
Read More
Occur in lagoon and seaward reefs. Secretive species normally hidden in sand or rubble, sometimes with only its head protruding. Feed on small fishes . Juveniles all black, males have yellow dorsal fin and females change to a nearly all yellow color, but usually with blue in the posterior . Only moray that undergoes abrupt changes in coloration and sex: it is a protandrous hermaphrodite, i.e., functioning males reverse sex to become females. Protandry is diagnosed based on colouration, but not confirmed .
Pterapogon kauderni Koumans, 1933 (Banggai cardinal fish)
The Banggai cardinalfish is remarkable among marine fishes for the extreme levels of genetic diversity found between its populations. Populations as little as five kilometres apart are as genetically distinct as separate s...
Read More
The Banggai cardinalfish is remarkable among marine fishes for the extreme levels of genetic diversity found between its populations. Populations as little as five kilometres apart are as genetically distinct as separate species, a consequence of the Banggai cardinalfish's highly limited dispersal capability, the strong currents and deep channels between the islands preventing interaction with populations at other sites . Banggai cardinalfish live in small groups of usually between 1 and 6 individuals, though a group of 500 has been recorded . Reproduction in the Banggai cardinalfish begins with the female choosing a male; the pair then separate from the group and establish a territory, aggressively defending it from other fish that come too close. The female then initiates an unusual courtship ritual, swimming alongside the male, bodies touching, and making a trembling motion. This behaviour occurs repeatedly on both sides, with the only signs of the male's receptivity being a darkening of the lower jaw and an occasional opening of the mouth . After several hours of this behaviour, the female spawns a mass of up to 75 large eggs . These are quickly swallowed by the male, and brooded in a special pouch inside the mouth . The eggs take about 20 days to hatch, after which, the newly hatched embryos continue to develop in the male's mouth pouch. After a further 10 days, when the young have reached around five to six millimetres in length, they are released . During the 30-day brooding period the male does not eat, and attends to the brood by frequently turning the eggs and expelling dead eggs and embryos. Once the brood are released, the male does not interact with them anymore . The small juveniles are most commonly found sheltering around sea anemones for protection. However, older juveniles and adults are more commonly found around branching corals and sea urchins . The Banggai cardinalfish feeds principally upon tiny planktonic crustaceans, with copepods, in particular, making up about 80 percent of the diet. Nevertheless, this species is an opportunistic feeder, and will take a variety of small organisms from the water column and the seabed, including marine worms, molluscs and fish larvae. In addition, it plays an important role in its environment by preying on the larval stages of coral reef fishes' parasites . The Banggai cardinalfish is preyed upon by various species, such as the crocodile-fish (Cymbacephalus beauforti), various lion-fish species (genus Pterois) and the grouper (Epinephelus merra) . This species may live for two years in the wild
Canthigaster valentini (Bleeker, 1853) (Valentinni's sharpnose puffer)
Centriscidae (Snipefishes and shrimpfishes)
Aluterus scriptus (Osbeck, 1765) (Unicornfish)
Pterois antennata (Bloch, 1787) (Broadbarred firefish)
Occurs in lagoon and seaward reefs. Hides in crevices under rocks and coral formations during the day and hunts at night. Typically with head towards the safety of their hide-out or narrow passage . Feeds on shrimps and...
Read More
Occurs in lagoon and seaward reefs. Hides in crevices under rocks and coral formations during the day and hunts at night. Typically with head towards the safety of their hide-out or narrow passage . Feeds on shrimps and crabs. Venomous and capable of inflicting a painful sting. Minimum depth reported taken from Ref. 30874. Solitary or in groups, under ledges and holes .
Balistoides viridescens (Bloch and Schneider, 1801) (Titan triggerfish)
Occur in lagoon, seaward reefs and sheltered inner reef slopes . Juveniles often associated with isolated patches of branching coral or rubble of shallow sandy protected areas. Adults occur singly or in pairs on the slo...
Read More
Occur in lagoon, seaward reefs and sheltered inner reef slopes . Juveniles often associated with isolated patches of branching coral or rubble of shallow sandy protected areas. Adults occur singly or in pairs on the slopes of deep lagoon or seaward reefs . Often hostile towards divers and may attack unprovoked when caring for eggs . Feed on sea urchins, coral, crabs and other crustaceans, mollusks and tube worms. Oviparous . Largest triggerfish; females are reported to have attacked divers when guarding their nest . Also caught with drive-in nets. Marketed fresh and dried-salted .
Taeniura lymma (Forsskål, 1775) (Bluespotted ribbontail ray)
Blue-spotted stingrays live alone or in small groups , migrating in large schools into shallow sandy areas on the rising tide in order to feed, and dispersing back into the ocean as the tide falls to shelter in the coral c...
Read More
Blue-spotted stingrays live alone or in small groups , migrating in large schools into shallow sandy areas on the rising tide in order to feed, and dispersing back into the ocean as the tide falls to shelter in the coral crevices of the reef . Feeding most commonly occurs during the day, but sometimes also at night , and the diet consists largely of worms, shrimps, crabs, molluscs and small fish . Prey is often detected through electroreception, a system which senses the electrical fields produced by the prey . Not all small fish and invertebrates are potential prey, as blue-spotted stingrays can often be found at 'cleaning stations', areas of reef where large fish line up and tiny fish or shrimp pick off their dead skin and parasites . In courtship, males often follow females, using their acutely sensitive 'nose' to detect a chemical signal emitted by the female that indicates she is receptive. Breeding occurs from late spring through the summer, and gestation can last anything from four months to a year . Reproduction is ovoviviparous, meaning females give birth to live pups that have hatched from egg cases inside the uterus . Up to seven pups are born per litter and each juvenile is born with the distinctive blue markings of its parents in miniature .
Plectorhinchus chaetodonoides Lacepède, 1801 (Harlequin sweetlips)
Inhabits coral-rich areas of clear lagoon and seaward reefs. Adults are solitary, near and under ledges or caves by day. Juveniles are found among corals . Feeds on crustaceans, mollusks, and fishes at night. Juveniles...
Read More
Inhabits coral-rich areas of clear lagoon and seaward reefs. Adults are solitary, near and under ledges or caves by day. Juveniles are found among corals . Feeds on crustaceans, mollusks, and fishes at night. Juveniles are used in the aquarium industry . Small juveniles may mimic a toxic flatworm .
Doryrhamphus dactyliophorus (Bleeker, 1853) (Ringed pipefish)
Inhabits tide pools, lagoons, and outer reef slopes. Found in caves and crevices. Ovoviviparous . The male carries the eggs in a brood pouch which is found under the tail . Has been reared in captivity .
Inhabits tide pools, lagoons, and outer reef slopes. Found in caves and crevices. Ovoviviparous . The male carries the eggs in a brood pouch which is found under the tail . Has been reared in captivity .
All the data in this dive will be erased (profile, notes, fish list...) and cannot be recovered. Are you sure?
You need to select at least one dive to import your dives in Diveboard.
This dive will be copied into your own logbook.
Please select which details you would like to keep.
This dive has been copied into your own logbook.
We are participating today in the startup contest Techcrunch Disrupt. Support Diveboard by voting for us!
All it takes is a click!
This popup will only show once. Don't forget to vote before closing it!
Carl Johnsen
Indonesia
Date: 2010-07-31 - 16:04
Max Depth: 20m Duration: 54mins
