diff --git a/src/entities/fish.rs b/src/entities/fish.rs
index f78fbb3..7d994bc 100644
--- a/src/entities/fish.rs
+++ b/src/entities/fish.rs
@@ -12,7 +12,7 @@ const FISH_ATTACH_RADIUS: f32 = 20.0;
 pub struct FishEntity {
     position: Vector2,
     direction: Vector2,
-    following_player: bool,
+    pub following_player: bool,
     size: Vector2,
     rng: ThreadRng
 }
@@ -66,7 +66,7 @@ impl FishEntity {
         self.position += movement;
     }
 
-    pub fn handle_free_movement(&mut self, player: &Player, dt: f64) {
+    pub fn handle_free_movement(&mut self, player: &mut Player, dt: f64) {
         // Distance and direction to player
         let dist_to_player = player.position - self.position;
         let dist_to_player_lin = self.position.distance_to(player.position);
@@ -76,6 +76,9 @@ impl FishEntity {
         // Handle player picking up fish
         if player.position.distance_to(self.position).abs() <= player.size.y * 2.2 {
             self.following_player = true;
+
+            // Add currency to the player
+            player.coins += 1;
         }
 
         // Look at the player;
@@ -83,7 +86,7 @@ impl FishEntity {
         self.direction = direction_to_player;
     }
 
-    pub fn update_position(&mut self, player: &Player, dt: f64) {
+    pub fn update_position(&mut self, player: &mut Player, dt: f64) {
         if self.following_player {
             self.handle_follow_player(player, dt);
         } else {
diff --git a/src/logic/ingame/mod.rs b/src/logic/ingame/mod.rs
index 843134e..4a4e0a8 100644
--- a/src/logic/ingame/mod.rs
+++ b/src/logic/ingame/mod.rs
@@ -76,7 +76,7 @@ impl Screen for InGameScreen {
             // Render entities
             let mut fish = &mut game_core.world.fish;
             for fish in fish.iter_mut() {
-                fish.update_position(&game_core.player, dt);
+                fish.update_position(&mut game_core.player, dt);
                 fish.render(&mut context_2d);
             }
 
diff --git a/src/world.rs b/src/world.rs
index 0212480..050d284 100644
--- a/src/world.rs
+++ b/src/world.rs
@@ -32,4 +32,16 @@ impl World {
 
         Ok(result)
     }
+
+    pub fn spend_coins(&mut self, count: usize) {
+        for _ in 0..count {
+            self.fish.pop();
+        }
+    }
+
+    pub fn reset(&mut self) {
+        for fish in self.fish.iter_mut() {
+            fish.following_player = false;
+        }
+    }
 }