Archaster typicus, commonly known as the sand sifting starfish or common sea star, is a marine invertebrate with a flat, gray or brownish body. They have five long, slightly tapering arms, though variations with three, four, or even six arms can occur. These starfish are adapted to life on sandy seabeds, where they bury themselves during high tide and move on the surface during low tide.
Key Characteristics:
Shape and Size: Five-limbed star with long, slightly tapering arms. Adults reach 12-15 cm in diameter.
Coloration: Grey or brownish, often with darker and lighter patches, sometimes forming a chevron pattern. Underside is pale.
Habitat: Sandy seabed, where they burrow and move over the surface.
Feeding: They are detritivores, feeding on organic matter in the sand.
Behavior: Active in the top layers of the sand, stirring it to prevent sediment buildup and promote oxygenation.
In Marine Aquariums:
Beneficial: They are popular in reef aquariums for cleaning and aerating the sand bed.
Peaceful and Reef-Safe: They are peaceful and won't harm fish, corals, or other invertebrates.
Maintenance: Require a thick sandy bottom and proper water conditions (temperature, pH).
Deep Cleaning: They stir the top layers of sand (up to 3 cm deep) but don't clean deeply below that.
Conomurex luhuanus, commonly known as the Strawberry Conch or Tiger Conch, is a medium-sized sea snail. It's a marine gastropod mollusk belonging to the family Strombidae, which includes true conchs. These snails are known for their vibrant shell interiors, typically colored orange, red, or pink, with a black or chocolate-brown inner lip border.
Here's a more detailed description:
Appearance:
The shell exterior can have a mottled, striped, or banded pattern, often with pink and white colors reminiscent of strawberries. The interior of the shell is the most striking feature, showcasing bright shades of orange, red, or pink.
Size:
Conomurex luhuanus can grow up to 8 cm (approximately 3 inches) in length.
Diet:
These snails are herbivores, feeding on algae, detritus, and organic matter. They also consume bristleworms and cyanobacteria.
Habitat:
They are found in the Indo-Pacific region, inhabiting sandy bottoms of coral reefs, seagrass beds, and coral rubble. They can also be found in coastal lagoons and other protected areas with clear bottom.
Behavior:
Conomurex luhuanus are known for their high visual acuity, with some studies suggesting they can resolve objects with high spatial resolution.
Ecological Role:
They play a vital role in marine ecosystems by consuming algae, detritus, and other organic matter, contributing to the overall health of the environment.
Social Behavior:
They can be found in colonies, both with juvenile and mixed age-class individuals.
Rochia nilotica, commonly called the commercial top shell, is a marine gastropod mollusk. It's a sizable, heavy, and conical sea snail, with a shell length ranging from 50mm to 165mm and a diameter of 100mm to 120mm . The shell is thick, has an off-white color with irregular axial reddish stripes, and is found in marine environments like tropical reefs.
Here's a more detailed description:
Shape: The shell is conical and subperforate, meaning it has a circular opening at the apex.
Size: It can reach lengths of 50mm to 165mm and diameters of 100mm to 120mm.
Color: The shell is off-white with large, irregular reddish stripes.
Surface: The body whorl is smooth, with concave sides above a protruding, acutely rounded, and thickened periphery .
Other features: The base of the shell is flat and marked with shallow spiral ridges. The aperture (opening) is square-shaped.
Habitat: It is found in marine environments, particularly tropical reefs.
Rochia nilotica is considered a commercially important species, both as a food source and a source of mother-of-pearl for jewelry and buttons. It is also known as a trochus shell or topshell
Ricordea yuma is a vibrant, soft coral species known for its distinctive, often bright colors and irregular, bubble-like tentacles. They are a popular choice for reef aquariums due to their relatively easy care and beautiful appearance. Ricordea yuma are native to the Pacific Ocean and are known for their ability to thrive in a variety of lighting conditions. They can reproduce both sexually and asexually through budding.
Key Characteristics:
Shape: Ricordea yuma typically have a rounded or lobed shape, with a large mouth disk.
Color: They come in a wide range of colors, including neon greens, oranges, and blues.
Tentacles: Their surface is covered with an irregular mat of short, bubble-like tentacles.
Care: They generally prefer moderate to high lighting and moderate water flow.
Growth: They can spread by budding, allowing them to colonize areas quickly.
Hardiness: They are relatively hardy and suitable for both beginner and experienced reef keepers.
Distinguishing Features from Ricordea Florida:
Ricordea yuma tend to have a higher concentration of tentacles around the mouth, while Ricordea florida have a more random distribution of tentacles.
Ricordea yuma also tend to have alternating rows of large and small tentacles radiating outwards from the mouth.
The yellow prawn-goby, or Cryptocentrus cinctus, is a small, bottom-dwelling goby native to the Western Pacific. They are known for their symbiotic relationship with alpheid shrimps, sharing burrows and benefiting each other. The fish can range in color from bright yellow to gray or brown, and can grow up to 10 centimeters long.
Here's a more detailed look at the yellow prawn-goby:
Appearance:
They can have a brilliant yellow color.
They can also have gray or brown coloration.
They may have a combination of these colors.
They often have 4-5 dusky bars and fine blue or white spotting on their head and body.
They can reach a length of up to 10 cm (3.9 in).
Habitat and Behavior:
They are found in coastal bays and lagoons.
They inhabit depths of 1 to 25 meters (3.3 to 82.0 ft).
They are symbiotic with alpheid shrimps.
They share burrows with shrimps, with the shrimp digging and maintaining the tunnel while the goby acts as a watchman.
Other Notable Features:
They can change color based on their environment and comfort level.
In good conditions, they are a bright yellow.
Under stress, they can become gray or brown.
They are popular in saltwater aquariums.
They are often kept in aquariums as small as 20 gallons (75 L).
The Dispar Anthias, Pseudanthias dispar, is a small, colorful reef fish known for its vibrant colors and peaceful temperament. It's a popular choice for home aquariums, particularly for those with reef tanks.
Key Features:
Coloration: Males have a bright red dorsal fin and a distinctive purple-edged orange stripe. Females display a yellowish-orange top and pale lavender to white underside.
Size: They grow to a maximum of 10 cm (4 inches).
Temperament: They are generally peaceful and reef-safe, making them suitable for community tanks.
Habitat: They are found in shallow waters on coral reefs and outer reef slopes.
Aquarium Care:
Water Parameters: They prefer a temperature of 23-28°C, a pH between 8 and 8.5, and good water quality with low nitrates.
Tank Size: A minimum of 200 liters (50 gallons) is recommended for a small group.
Social Structure: They are social and thrive in groups of one male and 3-4 females.
Diet: They are active planktivores and prefer a diet of frozen mysis shrimp, enriched brine shrimp, and high-quality flake food.
Reef Compatibility: They are reef-safe and can be kept with other peaceful reef inhabitants.
Distinctive Features:
Hermaphroditic: Anthias are known for being hermaphroditic, meaning they can change sex if a dominant male dies.
Schooling Behavior: They naturally live in schools, so keeping them in groups is recommended.
Pseudanthias squamipinnis, commonly known as the Sea Goldie or Lyretail Anthias, is a vibrant, colorful fish with a distinctive appearance. Males are purplish-pink with a pink to orange stripe and a red patch on their pectoral fins, while females are golden-orange with a violet streak. They have elongated dorsal and caudal fins, particularly in males.
Here's a more detailed description:
Males: Purplish-pink with a pink to orange stripe from the eye to the pectoral fin base. They also have a red patch on the pectoral fin, pale spots on a blue anal fin, and elongated dorsal and caudal fins.
Females: Golden-orange with a violet streak below the eye.
Body Shape: Oval, laterally flattened body.
Scales: Scales may have a red edge.
Fins: Usually reddish or pink, occasionally with blue or purple edges.
Size: Can reach a maximum total length of about 15 centimeters.
Other Notable Features: Some populations exhibit variations in coloration, but generally feature gold and red tones with an orange/blue cheek stripe.
Behavior: Known for their attractive colors and are often shy, hiding under overhangs during the day.
Protogynous Hermaphrodite: A male can retain a harem of females, and the largest and most dominant female can transition to a male role when necessary.
The Amblyeleotris guttata, also known as the Spotted prawn-goby, is a small, peaceful fish typically found in pairs, often associated with Pistol shrimp. They are characterized by a pale white or grey body with orange spots and dark markings on the pelvic fins and eyes. These gobies are commensal, meaning they live in a mutually beneficial relationship with Pistol shrimp, and are considered reef-safe.
Key Characteristics of Amblyeleotris guttata:
Appearance: Pale grey or white body with bright orange spots, darker pelvic fins, and black eye markings.
Commensal Relationship: They live in association with a pair of Pistol shrimp (genus Alpheus).
Diet: They are carnivores and planktonophages, with them as predators.
Temperament: Peaceful and reef-compatible.
Size: Typically reach a maximum size of 7 cm.
Origin: Native to the reef environments of the Western Pacific Ocean.
In Pairs: Spotted prawn-goby are often kept in pairs within an aquarium, and their natural behavior is to live with Pistol shrimp
Signigobius biocellatus, commonly known as the Twinspot Goby or Eyespot Goby, is a species of Goby that often lives in pairs. Pairs typically share a burrow and exhibit a unique behavior of "hopping" around, with their large, yellow-ringed ocelli (eyes) on their dorsal fins and black pelvic and anal fins resembling pincers. They are known for their pale body with brown blotches and a narrow brown bar through the eye.
Here's a more detailed description:
Appearance:
Twinspot Gobies have a pale body with irregular brown spots and saddles on the upper half, and three irregular brown bars on the lower half. A narrow brown bar runs across the base of the caudal fin. Their pelvic and anal fins are black with blue spots.
Behavior:
They often hover low over the sand and signal to each other with their ocelli. They may be aggressive towards other Goby species, but prefer to live singly or in pairs.
Habitat:
They inhabit lagoons and coastal bays with silty substrate and cover amongst corals and reef rubble, to depths of 30 meters.
Breeding:
Twinspot Gobies can be bred in captivity. In the wild, pairs work together to create and maintain burrows. The male will sometimes be sealed into the burrow during spawning, and the pair may occasionally return to the burrow for maintenance.
Salarias ramosus, commonly known as the Starry Blenny, is a small to medium-sized fish with a dark brown or black body adorned with numerous small, white spots, giving it a starry appearance. It also features white markings around the mouth, pectoral fin bases, and along its back, as well as white "antlers" or frills on the head. These blennies are herbivores, primarily grazing on marine algae and detritus.
Here's a more detailed description:
Appearance:
The Starry Blenny is characterized by its dark body color, often appearing red-brown or black, with a multitude of small, white spots that resemble stars. They also have white markings around the mouth, at the bases of their pectoral fins, and in the form of saddle or band-like patches on their back. White "antlers" or frills are also present on their head.
Habitat:
These blennies are found in shallow, coastal areas, including reefs, and can also be found in brackish estuaries. They are often seen near reef rubble margins or in shallow protected areas.
Behavior:
Salarias ramosus are generally solitary or live in small groups. They are known to be territorial and can be aggressive towards other blennies, as well as some other fish that compete for food.
Diet:
Primarily herbivores, Starry Blennies graze on various marine algae and detritus. They have specialized, comb-like teeth for algae grazing.
Conservation Status:
Salarias ramosus is currently classified as Least Concern by the IUCN Red List.
Size:
These blennies can reach a length of up to 14 centimeters (5.5 inches)
A pair of Synchiropus splendidus, also known as the Splendid Mandarin, are characterized by their vibrant, multicolored appearance and unique body shape. They are small, scaleless fish with a broad head and elongated body, reaching about 3 inches in length. Their bodies are primarily blue, adorned with intricate patterns of orange, red, and yellow lines. Males have a more pointed, elongated first dorsal fin compared to females.
Key features of a pair of Synchiropus splendidus:
Coloration: Vivid blue, orange, red, and yellow patterns create a striking visual display.
Body Shape: Broad head and elongated body, with no scales.
Sexual Dimorphism: Males have a more elongated and pointed first dorsal fin.
Fin Structure: They possess two short dorsal fins, two large pectoral fins, and a large anal fin.
Habitat: Primarily bottom-dwelling reef fish, found in sheltered lagoons and inshore reefs.
Behavior: Slow-moving, peaceful, and slightly territorial, they typically live in pairs or small groups.
Diet: Primarily carnivores, feeding on small crustaceans and invertebrates.
The Zebrasoma veliferum, also known as the Sailfin Tang, is a distinctive marine fish easily recognized by its high dorsal and anal fins, which give it a "sail-like" appearance. It is a species in the Acanthuridae family, also known as the surgeonfishes. The Sailfin Tang is characterized by vertical stripes, dark greyish to brown dorsal and anal fins with pale bands, and a greyish-brown to yellow caudal fin.
Key Features:
High Fins: The dorsal and anal fins are significantly larger than those of other tangs, making the fish appear tall even when compared to its body length.
Striped Appearance: Adults have broad dark bands on a whitish background with thin yellow lines running through the banding.
Coloration: The head is white with a black bar through the eye and yellow dots and lines. The tail is yellow with a blue-white margin.
Size: The Sailfin Tang can reach a maximum length of 40 cm (15.5 inches).
Habitat: It lives in association with coral reefs.
Distribution: The Sailfin Tang is found throughout the Indo-West Pacific region, including Australia.
Diet: It is primarily herbivorous, feeding on filamentous algae.
Juveniles:
Juveniles are smaller and have alternating yellow and black bars.
They may be mistaken for small angelfish due to their similar dorsal and anal fins.
