Quick answer: Fish in Dive Down are divided into seven depth zones ranging from the Sunlight Zone (0–30 meters) to Atlantis (670+ meters), with rarities spanning from Common to Divine. Completing the bestiary requires catching specific species in each depth layer, including five Secret fish and one Divine fish found only in the deepest biomes.

Completing the bestiary in Dive Down requires systematically fishing through seven distinct ocean layers, each defined by a specific depth range. As players descend, the rarity and value of the available fish increase, moving from Common species near the surface to Mythical, Secret, and Divine creatures in the abyss. Survival at lower depths depends on upgrading oxygen tanks and weights, allowing access to late-game areas like The Trenches and Atlantis.
The following sections detail every fish available in the game, categorized by the biome where they spawn.
Sunlight Zone
The Sunlight Zone is the starter area, extending from the surface down to 30 meters. This region contains low-rarity fish ideal for early currency farming.
| Fish | Rarity |
|---|---|
| Goldfish | Common |
| Butterflyfish | Rare |
| Piranha | Rare |
| Pufferfish | Epic |
| Koi Fish | Epic |
| Stingray | Epic |

Coral Reef
Located between 30 and 70 meters, the Coral Reef introduces Legendary fish alongside more valuable Rares and Epics.
| Fish | Rarity |
|---|---|
| Clownfish | Rare |
| Blue Tang | Rare |
| Lionfish | Rare |
| Seahorse | Epic |
| Betta Fish | Epic |
| Turtle | Legendary |
| Shark | Legendary |

Twilight Zone
Spanning from 71 to 165 meters, the Twilight Zone is the first biome where Mythical rarity fish can appear.
| Fish | Rarity |
|---|---|
| Bass | Epic |
| Salmon | Epic |
| Catfish | Epic |
| Swordfish | Epic |
| Eel | Legendary |
| Seal | Legendary |
| Jellyfish | Mythical |

Deep Ocean
The Deep Ocean covers a large vertical range from 165 to 280 meters. This area contains critical fish needed for Rebirth requirements, such as the Hammerhead.
| Fish | Rarity |
|---|---|
| Mahi-Mahi | Epic |
| Parrotfish | Epic |
| Sunfish | Legendary |
| Tuna | Legendary |
| Squid | Legendary |
| Hammerhead | Mythical |
| Narwhale | Mythical |

The Deep Dark
This massive zone runs from 281 to 560 meters. Survival here requires significant tank upgrades. It is the first zone to feature a Secret rarity fish.
| Fish | Rarity |
|---|---|
| Shrimp | Epic |
| Rockfish | Legendary |
| Slickhead Fish | Legendary |
| Gulper Eel | Mythical |
| Blobfish | Mythical |
| Anglerfish | Mythical |
| Whale | Secret |

The Trenches
The Trenches are located between 560 and 670 meters. This biome is populated entirely by high-rarity species, with no fish below Legendary tier.
| Fish | Rarity |
|---|---|
| Macropinna | Legendary |
| Telescopefish | Legendary |
| Spinyfish | Legendary |
| Fangtooth | Legendary |
| Hatchetfish | Mythical |
| Lizardfish | Mythical |
| Snailfish | Mythical |
| Whalefish | Secret |
Atlantis
The final biome begins at 670 meters. It houses the highest concentration of Secret fish and the only Divine fish currently in the game.
| Fish | Rarity |
|---|---|
| Crabfish | Legendary |
| Cloudfish | Mythical |
| Polkafish | Mythical |
| Peeber | Secret |
| Rubyfish | Secret |
| Pebblefish | Secret |
| Mermaid | Divine |

Secret and Divine Fish Locations
Secret and Divine fish have extremely low spawn rates. When one spawns, a server-wide announcement appears on the screen, though it does not specify the exact coordinate or depth. Players must travel to the specific biome associated with that fish to find it. Heavy weights and fast fins are recommended to reach these depths quickly before the fish despawns or is caught by another player.
| Fish | Rarity | Spawn Location |
|---|---|---|
| Whale | Secret | The Deep Dark (281m–560m) |
| Whalefish | Secret | The Trenches (560m–670m) |
| Peeber | Secret | Atlantis (670m+) |
| Rubyfish | Secret | Atlantis (670m+) |
| Pebblefish | Secret | Atlantis (670m+) |
| Mermaid | Divine | Atlantis (670m+) |
Rebirth Requirements
Progression through the five available Rebirths requires catching specific fish. These do not need to be caught immediately before the rebirth; having them registered in the bestiary is sufficient.
- Rebirth 1: Goldfish
- Rebirth 2: Hammerhead Shark and Parrotfish
- Rebirth 3: Anglerfish and Gulper Eel
- Rebirth 4: Whalefish
- Rebirth 5: Mermaid