List of monsters in Monster Hunter Y

Lynians
Felyne, Melynx

Number: 2

Herbivores
Anteka, Aptonoth, Apceros, Kelbi, Popo, Rhenoplos, Slagtoth

Number: 7

Fish
Perciform, Molid, Catfish, Arowana, Sharq, Jellyfish

Number: 6

Neopterons
Altaroth, Bnahabra, Great Thunderbug, Konchu, Purple Flashbug, Seltas, Desert Seltas, Seltas Queen, Desert Seltas Queen

Number: 9

Temnocerans
Nerscylla, Shrouded Nerscylla

Number: 2

Carapaceons
Hermitaur, Akura Vashimu, Akura Jebia, Daimyo Hermitaur, Plum Daimyo Hermitaur, Taikun Zamuza

Number: 4

Fanged Beasts
Bullfango, Conga, Arzuros, Bulldrome, Congalala, Emerald Congalala, Gogomoa, Kamu Orugaron, Kecha Wacha, Ash Kecha Wacha, Lagombi, Midogaron, Nono Orugaron, Rajang, Aisu Rajang, Volvidon

Number: 16

Amphibians
Zamite, Tetsucabra, Berserk Tetsucabra, Zamtrios, Tigerstripe Zamtrios

Number: 5

Piscine Wyverns
Cephalos, Delex, Cephadrome, Plesioth, Green Plesioth, Lavasioth, Lavasioth Subspecies, Aruganosu, Goruganosu

Number: 9

Bird Wyverns
Baggi, Genprey, Giaprey, Jaggi, Jaggia, Ioprey, Wroggi, Velociprey, Gargwa, Gendrome, Giadrome, Great Baggi, Great Jaggi, Great Wroggi, Iodrome, Velocidrome, Farunokku, Forokururu, Gypceros, Purple Gypceros, Hypnocatrice, Breeding Season Hypnocatrice, Hypnocatrice Rare Species, Qurupeco, Crimson Qurupeco, Yian Garuga, Yian Kut-Ku, Blue Yian Kut-Ku

Number: 29

Flying Wyverns
Giggi, Akantor, Anorupathisu, Barioth, Sand Barioth, Basarios, Ruby Basarios, Berukyurosu, Diablos, Black Diablos, Diorekkusu, Dhuragaua, Espinas, Espinas Subspecies, Espinas Rare Species, Gigginox, Baleful Gigginox, Gravios, Black Gravios, Gureadomosu, Khezu, Red Khezu, Meraginasu, Mi Ru, Monoblos, White Monoblos, Nargacuga, Green Nargacuga, Lucent Nargacuga, Pariapuria, Poborubarumu Rathalos, Azure Rathalos, Silver Rathalos, Rathian, Pink Rathian, Gold Rathian, Seregios, Tigrex, Brute Tigrex, Molten Tigrex, Ukanlos, Unknown (Black Flying Wyvern), Varusaburosu, Zerureusu

Number: 45

Snake Wyverns
Remobra, Najarala, Tidal Najarala

Number: 3

Fanged Wyverns
Zinogre, Stygian Zinogre

Number: 2

Brute Wyverns
Abiorugu, Barroth, Jade Barroth, Brachydios, Black Brachydios, Deviljho, Duramboros, Rust Duramboros, Gasurabazura, Giaorugu, Uragaan, Steel Uragaan

Number: 12

Leviathans
Ludroth, Pokara, Uroktor, Agnaktor, Glacial Agnaktor, Baruragaru, Gobul, Lagiacrus, Ivory Lagiacrus, Abyssal Lagiacrus, Nibelsnarf, Pokaradon, Royal Ludroth, Purple Ludroth

Number: 14

Elder Dragons
Alatreon, Amatsumagatsuchi, Ceadeus, Goldbeard Ceadeus, Chameleos, Dah'ren Mohran, Dalamadur, Shah Dalamadur, Dhisufiroa, Dire Miralis, Fatalis, Crimson Fatalis, White Fatalis, Garuba Daora, Gogmazios, Harudomerugu, Inagami, Jhen Mohran, Hallowed Jhen Mohran, Kirin, Oroshi Kirin, Kushala Daora, Lunastra, Shagaru Magala, Shanthien, Teostra

Number: 27

Mystery Dragons
Gore Magala, Ruins Gore Magala

Number: 2

Unclassified Monsters
Kusubami, Duremidira, Raviente, Violent Raviente

Number: 4

Total Number of Returning Monsters

 * 198 Monsters return in Monster Hunter Y!

Herbivores
Brachiotitanos, Stegaplatos, Tricetoros

Number: 3

Fish
Ginsu Sharq, Megaladon

Number: 2

Neopterons
Megapteris, Arthrocoris

Number: 2

Temnocerans
Necrophila, Mortarachnis, Pterygios

Number: 3

Bird Wyverns
Pengwyn, Strutornas

Number: 2

Flying Wyverns
Dactylos, Brutal Seregios, Draconix

Number: 3

Brute Wyverns
Alligius, Carchabrutus, Neon Deviljho, Spinex, Tyrannicus

Number: 5

Leviathans
Ichthyadon, Cryomonstrum, Elasmeoth, Mosujho, Sub-Zero Gobul

Number: 5

Elder Dragons
Annelarchus

Number: 1

Total Number of New Monsters

 * Monster Hunter Y has up to 26 New Monsters!

Total Number of Monsters altogether

 * Monster Hunter Y has up to 224 Monsters to hunt!

Neopterons

 * Seltas Subspecies can now dig underground and wait for hunters to come close so it can slash at them.
 * Seltas Queen always breaks down high structures when charging into them.

Carapaceons

 * Daimyo Hermitaur and its Hermitaur young can now walk underwater.
 * Daimyo Hermitaur and its Hermitaur young now mind their own business unless hit.
 * Akura Vashimu/Akura Jebia gains a pin attack where it grabs a hunter and starts pinching him/her and smashing him/her with its tail.

Piscine Wyverns

 * Cephadrome can now command its minions to help it fight.
 * Cephadrome is now more ferocious than ever.

Bird Wyverns

 * Giadrome has undergone the same changes all the other Dromes have undergone.
 * The Dromes can now connect their pounce with a pin attack if they successfully hit a hunter.
 * The Dromes are now more ferocious than ever.
 * Yian Garuga can now run while doing its famed Sonic Roar attack.

Flying Wyverns

 * Monoblos and Diablos now have roars so loud that they can knock hunters back.
 * Monoblos and Diablos always break down high structures when charging into them.
 * They can use that ability to get down hunters who were previously standing on high structures.
 * When Tigrex charges into a high structure, there is a chance that it'll break it down instead of climbing it.
 * Nargacuga can now jump up walls in a ninja-esque manner.
 * Mi Ru and Diorekkusu now have a rampage attack, similar to Brute Tigrex.
 * Seregios can now attack Genprey and throw them at hunters.

Fanged Wyverns

 * Zinogre always breaks down high structures when charging into them.

Brute Wyverns

 * Deviljho now has a roar so loud that it can knock hunters back.
 * Deviljho always breaks down high structures when charging into them.

Leviathans

 * Agnaktor/Glacial Agnaktor gains an attack where it digs into the ceiling, unearths only its head, and then does it's famed fire beam attack.

Elder Dragons

 * White Fatalis has undergone drastic changes, similar to its black and red cousins.
 * Lunastra has undergone the same changes Teostra has undergone.
 * Dah'ren Mohran can now do a tremor attack and launch the Dragon Ship a few feet up into the air before they both land again. (This also does damage to the ship.)
 * Along with this, it could punch a hole through the Dragon Ship with its drill-like horn when in Rage mode.

Other

 * Gore Magala is classified as a new monster type called Mystery Dragons.