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Mackerel Limn

Caranxocephaloarmatus scomberchromis is a species of Rotunducephalid Tartarosomnian amphibian from the South-eastern Irobian ocean and the Neygambian sea, more specifically found along the west coast of Zhem-Makhreq and south Outpost Island.   The animal lives in large shoals of up to sixty specimens, swimming close to each other and communicating verbally with the group, creating a distinctive chirping noise; this form of communication is used by the animal to convey emotions and to co-ordinate while swimming.   After long and detailed analysis were conducted on the changes in the chirps in relation to different external stimuli, it was concluded that the species uses different pitches and vocalizations to describe in detail both the environment or approaching creatures; this signalling method, in turn, helps the whole school to be aware of incoming obstacles or creatures and respond accordingly as a whole.   When threatened, C. scomberchromis circles the predator, using the lightly coloured skin to reflect the sunlight, they blind the attacker and run while it's still stunned.   The striping and distinct green colouration over the back are used to break down its silhouette and make it less visible.   Hunting in packs, the animal can prey on bigger animals than itself, using the same defensive strategy to blind prey, the specimens will take turns to bolt towards the tail of the prey and bite it, gradually lacerating skin and muscle and killing it by either bloodloss or asphyxiation.   Fishing boats departing from Zhem-Makhreq and Outpost Island often catch the animal while out fishing in the open sea.   C. scomberchromis can be cooked in fillets with herbs and spices directly on a grill or in a pan with just a little seed oil and accompanied with raw cook's rattle (preferably the female fruit).

Basic Information

Anatomy

  • Head short and high, dentition composed by small, sharp, teeth adapted to cutting.
  • Body high, Dorsal I fin veiled preceded by a long pinneal thumb.
 
  • Anal I, II & dorsal II fins all spear shaped; Anal II particularly long.
 
  • Gill Tail quite short and visibly lower than the rest of the body; Gill Fan romboid with a soft caudal drop.

Genetics and Reproduction

Seasonally monogamous species.   C. scomberchromis mates in the spring.   Members of a colony will migrate closer to the shore, where the females will start looking for good nesting sites, usually being rocks or underwater tree trunks.   Females will fight over the best nesting positions, usually chasing away each other before a male comes in to take the spot and the female currently guarding it. Male fights are usually quite short, mostly dictated by a few quick bites along the side of the body, leaving at worse a few minor wounds.   A male will mate with a single female for the season and the couple will stay close to the nest until the female lays her eggs to avoid it being taken away by thieving conspecifics, which will take any opportunity to switch places for a better spot.   After around a week of incubating, the eggs are laid in the most protected spot of the nest, where neither currents nor other animals would easily dislodge them; during this time, the couple will take turns to feed.   once the eggs have been laid, the couple will disband and return to the communal colony, where the specimens who already laid the eggs are aggregating again; once the last couple is done, the whole colony will leave the shores to go back into the open waters they normally hunt in.   The eggs will hatch a month from deposition and the young will stay close to the shore until they're big enough to move away from it; they'll create shoals of their own once they start getting bigger.

Growth Rate & Stages

Ontogenesis not very marked in the species;   Young specimens are silver coloured with less markings, hunting alone.   Loss of natal aculeus ten days after being born.

Ecology and Habitats

Epipelagic species living at depths between 5 and 60 m.   Rarely found deeper, the animal lives in large open spaces with plenty of life, they move constantly.

Dietary Needs and Habits

Predatory animal hunting in co-ordinated groups to blind and kill prey by aiming for the tail.   They hunt from smaller animals like several species of slenopiscoids to targets much bigger then them like ithmosmolids.

Biological Cycle

Periannial creature with few dips in activity year long.

Additional Information

Social Structure

Sociable animal living in large schools.   It communicates through chirps of different length and pitch; these chirps convey emotion but also instructions and descriptions of nearby animals and objects.

Domestication

due to its social and environmental needs, the species is impossible to keep in home aquariums, leaving only a select few public oceanographic centres with tanks big enough to house a few specimens.

Uses, Products & Exploitation

Valuable in the food industry for its low fat and tasty meat, recently became of concern the overfishing of the species.   Otherwise of moderate interest in sportfishing as a popular game animal especially during summer season.

Geographic Origin and Distribution

Open waters off the west coast of Zhem-Makhreq and Outpost Island; Neygambian Sea, Irobian Ocean.  

Perception and Sensory Capabilities

Very good eyesight, excellent communication skills.

Symbiotic and Parasitic organisms

Afflicted by Intestinal Tube Worms and drinker worms.   Carriers of free swimming stage False tooth parasites, although they only act as carriers for it.
Scientific Name
Eoichthyia; Tartarosomnia; Rotunducephalidae ; Caranxocephaloarmatus C. scomberchromis
Lifespan
15 Years
Conservation Status
Least Concern: no measures underway to protect this species.   Population Trend: DECREASE
Average Weight
20-50 kg
Average Length
1.2 m (male) , 1.6 m (female)
Body Tint, Colouring and Marking
Azure to silver coloured body, ventral section blue.   Single purple to pink band along the length of the body.   Green band over the length of the back to the tail; grey to black striping alond the body.   Fins tipped in the colour of the opposing section of the body from where they grow.

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Comments

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Jun 30, 2020 05:24 by Dimitris Romeo Havlidis

That is a very very big Macherel

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