ElectricAbilities
The doc breeds for Lightning Rod (HA★).
The doc breeds for Static (Alola).
Egg
Pichu can't breed until it evolves; Pikachu breeds in these groups. Pick one to list every Pokémon in the doc that can breed with it.
50%50%IVs and nature
Pichu
31HP
Atk
31Def
31SpA
31SpD
31Spe
Nature
TimidSpeAtk
Pichu (HP Ice)
Hidden Power Ice
Hidden Power Ice31HP
EvenAtk
31Def
31SpA
31SpD
31Spe
Nature
TimidSpeAtk
Pichu (Alola Evo)
31HP
Atk
31Def
31SpA
31SpD
31Spe
Nature
TimidSpeAtk
Egg moves
The rest it can hatch with, from the game's data
Trade value
Nothing in this line is on the value list.
PvP usage
Hidden Power calculator
HPOdd
AtkEven
DefOdd
SpAOdd
SpDOdd
SpeOdd
The spread the 
Trade Department breeds for Hidden Power Ice. Any other IV pattern that gives Ice is traded as imperfect.
Trade Department breeds for Hidden Power Ice. Any other IV pattern that gives Ice is traded as imperfect.Want a type? Pick it to fill in the best IVs for it.