Безгръбначни

Common names: Fluted giant clam or scaly clam Scientific classification: Kingdom Animalia, Phylum Mollusca, Class Bivalvia, Order Cardiida, Family Cardiidae, Subfamily Tridacninae, Genus Tridacna Size: Grows up to 40 cm (about 16 inches) across. Shell characteristics: Features prominent, leaf-like fluted projections called scutes along the primary radial ribs, with a relatively small byssal opening. Mantle coloration: Mottled or reticulated patterns in brown, purple, green, yellow, orange, or blue. Habitat & Distribution: Found in warm, shallow coral reefs, reef flats, lagoons, and reef slopes across the Indo-Pacific—from South Africa and the Red Sea to the Marshall Islands, Polynesia, and southern Japan. Biology & Diet: Sessile adult that relies on photosymbiosis, hosting single-celled photosynthetic algae (zooxanthellae) in its mantle tissue while also filtering phytoplankton and absorbing dissolved nutrients

Прочети Повече ▼ по-малко

Limulus polyphemus are ancient marine arthropods that are closely related to arachnids like spiders and scorpions, rather than true crabs. Physical Description & Anatomy Body Structure: The body is divided into three main sections hinged together: Cephalothorax (Prosoma): The large, U-shaped or horseshoe-shaped front shell that houses the brain, heart, digestive organs, and most of the limbs. Abdomen (Opisthosoma): The smaller, segmented middle section containing the book gills used for breathing. Telson: A long, sharp, spike-like tail used as a rudder for steering and for flipping themselves right-side up if they get turned over. It is harmless and not venomous. Eyes & Vision: They have multiple eyes (around 10 in total), including a pair of compound eyes on the shell and smaller photoreceptors or light-sensing organs along the tail and underside. Legs & Feeding: They have 10 legs. The first pair (chelicerae) grasp prey, while the remaining legs feature spiny bases that crush and grind food (such as worms and clams) before pushing it into the mouth located underneath. Size & Color: Adults have a hard, brownish-green exoskeleton and can grow up to 2 feet (60 cm) or more in length. Unique Features Living Fossils: Their lineage dates back hundreds of millions of years (older than dinosaurs). Blue Blood: Their blood is bright blue because it relies on copper-based hemocyanin instead of iron-based hemoglobin. Their blood contains special cells (amebocytes) that rapidly clot around bacterial toxins, making it vital for testing safety in pharmaceutical drugs and medical devices

Прочети Повече ▼ по-малко

Common Names: Beaded sea anemone, aurora host anemone, sand anemone. Scientific Classification: Family Stichodactylidae, Genus Heteractis, Species Heteractis aurora. Appearance & Morphology Tentacles: Up to 50 mm long, featuring distinct, bead-like transverse swellings (up to 20 swellings per tentacle) that resemble pearls or a string of beads. Oral Disc: Flattened and broad, reaching up to 250–300 mm (25–30 cm) in diameter, often with radiating lines or markings extending from the center. Colors: Typically brown, greenish-beige, cream, or purplish, sometimes with magenta-tipped tentacles and a pale column featuring orange or red spots near the base. Habitat & Distribution Geographic Range: Widely distributed across the Indo-Pacific oceans, including the Red Sea, East Africa, Micronesia, Melanesia, Australia, and north to Japan Environment: Benthic marine biomes found in sandy sediment, silt, or rubble areas adjacent to coral and rocky reefs, usually in moderate currents. Depth: Commonly found from 1 to 40 meters deep. Behavior: Partially buries its column and foot deep into the sand while keeping its oral disc and tentacles exposed; retracts completely into the substrate when threatened. Symbiosis & Diet Clownfish Hosts: Acts as a host/nursery anemone for multiple species of anemonefish (clownfish), including Amphiprion chrysopterus, Amphiprion tricinctus, and Amphiprion akindynos. Diet: Carnivorous, feeding on small fish, crustaceans, and planktonic items captured by its sticky tentacles

Прочети Повече ▼ по-малко

Dolabella auricularia, commonly known as the wedge sea hare or blunt-end sea hare, is a large species of marine sea slug belonging to the family Aplysiidae. Morphology & Physical Description Size: Grows up to 40 to 50 cm (16–20 inches) in length. Body Shape: Features a narrow, blunt head with rabbit-ear-like rhinophores (tentacles), widening toward the rear into a distinct, sloping, flattened disc-like shield on the posterior surface. Texture & Color: The body is mottled in shades of green and brown for camouflage, covered in soft pustules, warts, or skin papillae giving it a shaggy, knob-like appearance. Shell: Possesses a small, vestigial, ear-shaped internal calcareous shell. Defense: Ejects a copious amount of purple ink from its exhalant siphon when disturbed or threatened. Habitat & Distribution Geographic Range: Widely distributed throughout the tropical Indo-West Pacific region, including the Red Sea, East Africa, the Indian Ocean, Southeast Asia (such as the Philippines), Hawaii, and northern Australia. Environment: Found in shallow, sheltered bays, lagoons, inner reef flats, seagrass beds, sandy or muddy bottoms, and intertidal rock pools (typically from the surface down to about 20 meters depth). Diet & Behavior Feeding: Herbivorous, feeding on a mixed diet of green, brown, and red macroalgae as well as seagrasses. Activity: Primarily nocturnal; hides under rocks, coral heads, or in the substrate during the day and emerges at night to forage. Aquarium Use: Frequently kept in saltwater reef aquariums as a natural cleaner to graze on nuisance hair algae and film algae

Прочети Повече ▼ по-малко

Camposcia retusa (commonly known as the velcro crab, spider decorator crab, or harlequin crab) is the only species in the genus Camposcia within the family Inachidae. Key Characteristics & Description Common Names: Velcro crab, spider decorator crab, harlequin crab, blunt decorator crab, or tarantula crab. Size: Carapace (shell) width: About 1.5 to 4 cm (0.6 to 1.5 inches). Total leg span: Roughly 8 to 10 cm (3 to 4 inches). Appearance & Camouflage: The body has a pear-shaped or tear-drop, bumpy carapace with a swollen stomach area and a broad, slightly deflexed rostrum (head). Its body and long, spider-like legs are completely covered in specialized hook-like hairs (seta) that function much like Velcro. The crab deliberately plucks and attaches living materials—such as sponges, soft corals, sea anemones, algae, shells, and marine debris—onto these hooks to hide from predators. Behavior: Slow-moving and largely sedentary or nocturnal, relying heavily on its camouflage. Eyes are tiny and sit on long eyestalks; its pincers (chelae) are short and cylindrical. Habitat & Distribution Geographic Range: Widely distributed throughout the tropical Indo-West Pacific region, spanning from the Red Sea and East African coast across the Indian Ocean to Southeast Asia, southern Japan, and Australia. Environment: Found in shallow marine waters, rocky or coral rubble shores, and seagrass beds.

Прочети Повече ▼ по-малко

Calcinus elegans—commonly known as the Electric Blue Hermit Crab, Blue-banded Hermit Crab, or Blue Line Hermit Crab—is a vibrant, small marine crustacean belonging to the family Diogenidae. Physical Description Size: Typically grows to about 3 to 5 cm (1.2 to 2 inches) in length. Legs & Banding: Features striking, vivid electric blue legs with deep black or dark horizontal banding. Claws (Chelae): Both chelae are nearly equal in size, exhibiting an olive-green, brownish-green, or dark greenish-black tone. Antennae & Eyes: The eye stalks are blue, while the prominent antennae and mouthparts display a bright orange coloration. Body: Like other hermit crabs, it possesses a soft, uncalcified abdomen that it tucks into discarded gastropod (snail) shells for protection. Natural Habitat & Distribution Geographic Range: Widely distributed across the Indo-West Pacific region, including the East and West Indian Ocean, Indonesia, the Philippines, the Great Barrier Reef, the Maldives, and the Marshall Islands. Depth & Substrate: Found in shallow tropical marine waters from the intertidal and splash zones down to about 10–20 meters, inhabiting rocky bottoms, coral rubble, boulder fields, and sandy areas. Behavior & Ecology Diet: An omnivorous scavenger and detritivore; it feeds on organic debris, leftover food, and various algae (including green hair algae and cyanobacteria). Shell Use: It relies on empty sea snail shells. If vacant shells are scarce, it may aggressively confront or kill live snails to claim their shells. Growth: Undergoes periodic molting, shedding its exoskeleton to grow, which requires a ready supply of progressively larger empty shells in its environment. Aquarium Role: Popular in marine and reef aquariums as an active member of the "clean-up crew," though it can occasionally dislodge loose coral fragments while clambering over rockwork

Прочети Повече ▼ по-малко

Ophiolepis superba, commonly known as the banded brittle star or tiger serpent starfish, is a striking marine invertebrate in the class Ophiuroidea. It features a beige-to-yellow-orange central disc patterned with dark purple or black markings and distinct dark bands along its relatively smooth arms Physical Traits Central Disc: Reaches up to 3 cm (or up to 5–7 cm in some measures) in diameter, covered in large plates surrounded by smaller platelets. Arms: Slender and flexible, spanning up to 20 to 30 cm total length, with tiny lateral spines making them look smooth. Coloration: Pale yellowish-orange base with bold black or purple bands and disc patterns.    Habitat & Behavior Distribution: Found widely across the tropical Indo-West Pacific region, from the Red Sea and East Africa to Australia and South Pacific islands.    Environment: Lives in shallow coastal to deeper reef zones (1 to 30 meters deep), hiding under rocks, coral rubble, and crevices during the day.  Diet: A peaceful, nocturnal scavenger and omnivore that feeds on detritus, carrion, and leftover food.    If you are planning to keep Ophiolepis superba in a marine tank, would you like details on water parameters, tank size requirements, or compatible tank mates?

Прочети Повече ▼ по-малко

Ophiarachna incrassata, widely known as the Green Brittle Star or Thick-armed Brittle Star, is a large, predatory marine echinoderm native to the Indo-West Pacific. Highly active and robust, it is famous among aquarists for its striking appearance and surprising predatory behavior.  Physical Characteristics Size: It is one of the largest brittle stars, with a central disc (body) that can measure up to \(5\) cm (\(2\) inches) in diameter. Its five arms can grow up to \(20\) to \(25\) cm (\(8\) to \(10\) inches) long, giving the entire creature a striking span of up to \(50\) cm (\(20\) inches).  Coloration: Its base color ranges from muted or bright green to brownish-green. The central disc is typically adorned with lighter yellowish dots or markings, and the arms are often lined with alternating whitish to yellowish-white spines.  Habitat and Range Natural Range: Widespread throughout the tropical Indo-West Pacific, spanning from the Red Sea to Hawaii and the coasts of northern Australia and Japan.  Environment: Found in shallow, tropical littoral waters, usually at depths of less than \(10\) meters (\(30\) feet). They are benthic dwellers, commonly found on reef flats tucked among coral rubble, rocks, seagrass beds, and algae. Diet and Behavior Feeding Habits: Unlike many brittle stars that strictly scavenge, Ophiarachna incrassata is a highly capable predator. While they will eat detritus, zooplankton, and meaty leftovers, they also actively hunt and capture small fish and other invertebrates using their thick, flexible arms.  Movement: They use their arms to crawl rapidly across the seafloor, making them surprisingly fast for echinoderms.  Temperament: They are solitary and generally secretive, often hiding in rock crevices during the day. They are known to be somewhat aggressive toward other tank inhabitants and should be kept with caution in reef aquariums containing small, sleeping fish

Прочети Повече ▼ по-малко