Temperament / Behavior : In the ocean they can form large schools but given the size of most home aquariums this isn't going to be feasible to recreate.
Climate change and sedimentation is having an impact on not only this species but all of the reef species. Often found near outer reef edges and steep drop-offs swimming in the open. While several species from this family are popular in the marine aquarium trade, they are often notoriously ill-tempered. Aquarium Size : 180 gallon minimum for one Niger Triggerfish, much larger for keeping multiples.
During actual spawning, eggs are laid on the sandy sea bottom (triggerfish are demersal spawners despite their large size). Xenobalistes, Triggerfish are about 43 species of often brightly colored fish of the family Balistidae. There are 40 species of Triggerfish and they all offer bold colors that are very spectacular. Most are found in relatively shallow, coastal habitats, especially at coral reefs, but a few, such as the oceanic triggerfish (Canthidermis maculata), are pelagic. Both the picasso (Rhinecanthus aculeatus) and titan triggerfish (Balistoides viridescens) viciously defend their nests against intruders, including scuba divers and snorkelers. In the home aquarium you can give them nearly anything and they will go after it. A male triggerfish stays farther above the eggs and guards all the females and eggs in his territory. Learn about different types of triggerfish and how to care for them. While Triggerfish can be difficult to keep in an aquarium, the Pinktail Triggerfish is an exception. A recent issue of CORAL magazine (March/April 2012) had a great article on how the Crosshatch Trigger has been successfully bred in an aquarium. Balistoides This triggerfish will normally do well in an aquarium with other fish of the same species. Triggerfish. One may be easy going and the next could be quite the terror. Xanthichthys
In the home aquarium you can give them nearly anything and they will go after it. Live brine shrimp and chopped up, frozen fish or shrimp will work well for these.
Triggerfish, any of about 30 species of shallow-water marine fishes of the family Balistidae, found worldwide in tropical seas.
Reef Tanks - Mini-Reef Aquarium Guide . Students and teachers are allowed to use this information for school projects and homework. In NTF polygyny, nonterritorial females stay in the male's territory and reproduce. Odonus In relation to lunar cycles, eggs are observed 2–6 days before the full moon and 3–5 days before the new moon. 11 genera, about 40 species; worldwide. Rhinecanthus WH aide's interview over Trump remarks gets heated. When they feel danger around them, one of them moves like a trigger (which is where the name comes from). As juveniles they will need lots of hiding places (using live rock) to help make them feel secure.  Yellow margin triggerfish (Pseudobalistes flavimarginatus) also exhibit polygyny.
Triggerfish, once acclimated into an aquarium, are fairly robust and will do well.
They are attractive and often get attention when people are snorkeling or when people see them in an aquarium setting. Even keeping just one though you need at least a 180 gallon fish tank. As a protection against predators, triggerfish can erect the first two dorsal spines: The first (anterior) spine is locked in place by erection of the short second spine, and can be unlocked only by depressing the second, “trigger” spine, hence the family name “triggerfish”. Triggerfishes exhibit other types of mating systems, as well, such as a nonterritorial-female (NTF) polygyny and territorial-female (TF) polygyny. Let us know if you have suggestions to improve this article (requires login).
The color schemes allow them to blend in well with their habitat. The largest triggerfishes grow about 60 cm (2 feet) long. Most Triggerfish are difficult to keep in a saltwater aquarium with other fish. Besides guarding, females roll, fan, and blow water on eggs to provide oxygen to the embryos, thereby inducing hatching.  A few, for example the redtoothed triggerfish (Odonus niger), mainly feed on plankton.
Gill plates (opercula), although present, are also not visible, overlaid by the tough skin, covered with rough, rhomboid scales that form a stout armor on their bodies. In relation to timing of tides, eggs are observed on days when high tides take place around sunset.. They aggressively protect their surroundings and they will battle with each other frequently within their own schools.
The two pelvic fins are overlaid by skin for most of their length and fused to form a single spine, terminated by very short rays, their only external evidence. Diet / Foods : In the ocean they mostly feed on sea urchins, crabs and other inverts. State's unemployed may have to return $300 benefit
Most Triggerfish are difficult to keep in a saltwater aquarium with other fish. Don't keep them with ornamental crabs and shrimp unless you don't mind them becoming lunch for your trigger. The Clown Triggerfish is one of the most sought after triggerfish in the ocean due to their gaudy colors and "personality". Each male red-toothed triggerfish (Odonus niger) mates with more than 10 females in his territory on the same day. "Balistoides conspicillum". November 2005 version. SIZE 12 in (30 cm) DIET A range of animal foods, including river shrimp. They tend to be close to shallow waters and along coral reefs. , Some triggerfish species can be quite aggressive when guarding their eggs. Fish Disease : Saltwater Fish Disease Section. Keep this in mind when setting up any rock formations in the tank to prevent rock from crashing down into the tank bottom. The males will come along to fertilize them with sperm. Triggerfish, any of about 30 species of shallow-water marine fishes of the family Balistidae, found worldwide in tropical seas. WATER Temperature 77–79°F (25–26°C); alkaline (pH 8.2–8.4) with SG 1.023–1.027. One of the neat elements of their bodies is that their eyes are far back on the head and they can move each of them independent of the other. Ed. Disease wise they are considered quite hardy but do a slow drip acclimation over an hour or so upon introduction and give them a good diet of the proper foods. Balistapus
About 32 genera, about 102 species; worldwide.…, …invertebrates; others (such as some triggerfishes) specialize in eating spiny sea urchins or even clams and oysters. The Clown Triggerfish is a really good eater for the most part.
Eggs are scattered and attached to sand particles. Tank Mates : The Niger Trigger is not as aggressive as some of the other triggers but it does get big and the bigger it gets the more aggressive it becomes. Off Florida, juveniles of some species of triggerfishes are found in floating Sargassum, where they feed on the small shrimp, crabs, and mollusks found there. Size: Up to 20 Inches Freshwater/ Saltwater: Saltwater Diet: Carnivore
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