You get a cottonee for petilil in white / get a petilil for cottonee in black (Nacrene city).
Red-Striped Basculin for Mincinno(Black)/Blue-Striped Basculin for Mincinno(White) (Driftveil City)
Emolga for Boldore (Route 7)
Rotom for Ditto (Route 15)
Munchlax for Cinccino (Undella Town, Summer)
All of the traded pokemon have a certain set of IVs, having 31 in a particular stat, while having 20 each in the rest.
Items, ability, moveset, ID, Nature, Nickname, and level of traded pokemon.
Lillil(Petilil)
ID: 39922
Item: Cheri Berry
Modest Nature
Lvl 15
Ability: Chlorophyll
Growth
Leech seed
Sleep Powder
Mega Drain
Fluffee(Cottonee)
ID: 39922
Item: Cheri Berry
Modest Nature
Lvl 15
Ability: Prankster
Growth
Leech seed
Stun Spore
Mega Drain
Redeye(Red Basculin)
ID: 27646
Item: Sitrus Berry
Adamant Nature
Lvl 25
Ability: Reckless
Aqua Jet
Chip Away
Take Down
Crunch
Blueye(Blue Basculin)
ID: 27646
Item: Sitrus Berry
Adamant Nature
Lvl 25
Ability: Rock Head(Special Ability)
Aqua Jet
Chip Away
Take Down
Crunch
Minipete(Emolga)
ID: 11195
Item: Lum Berrry
Lax Nature
Lvl 30
Ability: Static
Double Team
Shock Wave
Electro Ball
Acrobatics
Eeks(Rotom)
ID: 54673
Item: Max Elixir
Gentle Nature
Lvl 60
Ability: Levitate
Substitute
Electro Ball
Hex
Charge
Gorge(Munchlax)
ID: 40217
Item: Leftovers
Serious Nature
Lvl 60
Ability: Thick Fat
Rollout
Natural Gift
Snatch
Last Resort