Planet Zoo 2 Javanese Cownose Ray — habitat, biome, size & which animals it can live with

Javanese Cownose Ray is one of the 136 Planet Zoo 2 launch species. It is kept in an Aquarium, accepts the Estuarine / Open Sea / Reef biome, has a Grade 2 at a minimum height of 1 m, and is listed at 1.00 m (length). It shares a biome and an enclosure type with 28 other species, so it can be mixed into a shared enclosure — 0 of those pairings are confirmed by Frontier's own text.

Javanese Cownose Ray at a glance

Source: official Planet Zoo 2 Zoopedia export (136 species). Also on the searchable animal list.

Enclosure and barrier requirements

Javanese Cownose Ray is kept in an Aquarium and accepts the Estuarine / Open Sea / Reef biomes. The barrier requirement is Grade 2 · 1m, and that is the number to check before building: a Grade 4 animal behind a Grade 1 wall is the most common way a first zoo stalls.

Which animals can live with the Javanese Cownose Ray?

21 launch species share both a biome and an enclosure type with the Javanese Cownose Ray, so they are the only candidates for a mixed habitat. Of those, 0 are confirmed group-living by Frontier's own text and 21 are unverified — both are listed rather than presented as equally safe.

Species	Biome	Enclosure	Verdict	Evidence
Blacktip Reef Shark	EstuarineMangroveReef	Aquarium	Unverified	Frontier has not stated a social structure for this species.
Blue and Gold Fusilier Deluxe	Reef	AquariumExhibit	Unverified	Frontier has not stated a social structure for this species.
Bluespine Unicornfish	Reef	AquariumExhibit	Unverified	Frontier has not stated a social structure for this species.
Clown Anemonefish	Reef	AquariumExhibit	Unverified	Frontier has not stated a social structure for this species.
Clown Triggerfish	Reef	Aquarium	Unverified	Frontier has not stated a social structure for this species.
Dolphinfish	Open Sea	Aquarium	Unverified	Frontier has not stated a social structure for this species.
Golden Trevally	EstuarineReef	Aquarium	Unverified	Frontier has not stated a social structure for this species.
Humphead Wrasse	Open SeaReef	Aquarium	Unverified	Frontier has not stated a social structure for this species.
Indian Ocean Oriental Sweetlips	EstuarineReef	Aquarium	Unverified	Frontier has not stated a social structure for this species.
Indo-Pacific Sergeant	Open SeaReef	AquariumExhibit	Unverified	Frontier has not stated a social structure for this species.
Longfin Batfish Deluxe	Reef	Aquarium	Unverified	Frontier has not stated a social structure for this species.
Ocellated Eagle Ray	EstuarineOpen SeaReef	Aquarium	Unverified	Frontier has not stated a social structure for this species.
Pacific Bluefin Tuna	Open Sea	Aquarium	Unverified	Frontier has not stated a social structure for this species.
Pacific Sardine	Open Sea	Aquarium	Unverified	Frontier has not stated a social structure for this species.
Palette Surgeonfish	Reef	AquariumExhibit	Unverified	Frontier has not stated a social structure for this species.
Sailfin Snapper	Reef	Aquarium	Unverified	Frontier has not stated a social structure for this species.
Sand Tiger Shark	Reef	Aquarium	Unverified	Frontier has not stated a social structure for this species.
Schooling Bannerfish	Reef	AquariumExhibit	Unverified	Frontier has not stated a social structure for this species.
Threespot Damselfish	MangroveReef	AquariumExhibit	Unverified	Frontier has not stated a social structure for this species.
West Indian Manatee	EstuarineLakes & RiversMangroveOpen SeaWetlands	Aquarium	Unverified	Frontier has not stated a social structure for this species.
Yellow Tang	Reef	AquariumExhibit	Unverified	Frontier has not stated a social structure for this species.

Rule: two animals can share an enclosure only when they share a biome and an enclosure type. Likely OK means Frontier's own Social & Reproduction text says both species live in groups; Unverified means the data does not say, so we do not guess. Pair-by-pair table: compatibility chart.

Same biome, but not compatible

7 of the species that accept the Estuarine / Open Sea / Reef biome cannot share an enclosure with the Javanese Cownose Ray, because one side of the pair is officially solitary. These are the pairings people ask about most, so they are spelled out rather than left as an unexplained gap.

Species	Biome	Enclosure	Why not
Blackspotted Puffer	Reef	Aquarium	Blackspotted Puffer is solitary “Blackspotted puffers are solitary and territorial, only interacting with conspecifics during the breeding season.”
Giant Grouper	EstuarineMangroveReef	Aquarium	Giant Grouper is solitary “Giant groupers are solitary fish, although they may form temporary aggregations during spawning.”
Great Hammerhead Deluxe	Open SeaReef	Aquarium	Great Hammerhead is solitary “As opposed to some other species of hammerhead, the great hammerhead shark is a solitary animal.”
Hawksbill Turtle	EstuarineMangroveOpen SeaReef	Aquarium	Hawksbill Turtle is solitary “Hawksbill Turtles are solitary and only interact with other individuals to mate.”
Indo-Pacific Leopard Shark	EstuarineMangroveOpen SeaReef	Aquarium	Indo-Pacific Leopard Shark is solitary “Indo-Pacific leopard sharks are usually solitary, but may gather in large groups on occasion for reasons unknown.”
Ocean Sunfish	Open Sea	Aquarium	Ocean Sunfish is solitary “Ocean sunfish are solitary animals.”
Red Lionfish	EstuarineReef	Aquarium	Red Lionfish is solitary “Red lionfish are solitary but will gather in temporary harems during breeding events.”

Close, but ruled out by enclosure type

6 species share at least one biome with the Javanese Cownose Ray but use a different enclosure type — a land habitat against an aquarium or a flying aviary — so they cannot be mixed however well the biomes line up.

African Penguin, Asian Small-Clawed Otter, Diamondback Terrapin, Greater Flamingo, Moon Jelly, Saltwater Crocodile

Behaviour, size and weight

Javanese Cownose Ray is classed as Not stated in Frontier's Social & Reproduction notes: “Javanese cownose rays often swim in large groups, sometimes numbering in the hundreds, which helps them search for food and avoid predators.” On size the game lists 1.00 m (length) for the male and 1.00 m for the female. Size and weight together decide the minimum habitat footprint, so use the female figure when you are sizing a breeding pair rather than a display animal.

Building for the Javanese Cownose Ray in a starter zoo

The barrier is the first thing to plan: Grade 2 at a minimum height of 1 m. That is a cheap early-game wall, and it is part of what makes this species easy to house in a new zoo. Build the fence line before you place the animal, because a habitat that fails the barrier check will not accept it at all.

An aquarium is a water build rather than a paddock. The tank has to be filled and filtered, and the water type has to match the biome listed above — a tank built for a reef species will not accept a freshwater fish, even though both are aquariums.

It also accepts 3 biomes (Estuarine / Open Sea / Reef), so the same species can be rehoused in a second habitat without changing animal.

Range and conservation status

Javanese Cownose Ray is listed for Indian Ocean · Pacific Ocean. Its conservation status is Endangered — threatened with extinction in the wild. Taxonomically the Zoopedia places it in order Myliobatiformes and the family Rhinopteridae. Conservation status is recorded for all 136 species in the official export and does not change how the animal is housed, but it is the field that tells you how rare the species is in the wild.

Which enclosure-mates to try first

Nothing is confirmed yet: 21 species match on the Estuarine / Open Sea / Reef biome and the Aquarium enclosure type, but Frontier has not published a social structure for them, so none of those pairings can be called safe. They are listed in the table above, and checked pair by pair on the compatibility chart.

FAQ

Related

All 136 animals · Full compatibility chart for Javanese Cownose Ray · Aquarium animals · Aviary birds · Deluxe edition animals · System requirements