===================================================================
--- original.js
+++ change.js
@@ -17,8 +17,56 @@
 		anchorY: 0.5
 	});
 	self.speed = 0.75;
 	self._move_migrated = function () {
+		// Obstacle avoidance logic
+		var obstacles = aquarium.children.filter(function (child) {
+			return child !== self && child !== fishGraphics;
+		});
+		var avoidVector = {
+			x: 0,
+			y: 0
+		};
+		obstacles.forEach(function (obstacle) {
+			var dx = self.x - obstacle.x;
+			var dy = self.y - obstacle.y;
+			var distance = Math.sqrt(dx * dx + dy * dy);
+			if (distance < 100) {
+				// Avoid if within 100 pixels
+				avoidVector.x += dx / distance;
+				avoidVector.y += dy / distance;
+			}
+		});
+		if (avoidVector.x !== 0 || avoidVector.y !== 0) {
+			var avoidAngle = Math.atan2(avoidVector.y, avoidVector.x);
+			self.targetRotation = avoidAngle;
+			self.rotationStartTime = LK.ticks;
+			self.rotationDuration = Math.random() * 60 + 30;
+		}
+		// Obstacle avoidance logic
+		var obstacles = aquarium.children.filter(function (child) {
+			return child !== self && child !== fishGraphics;
+		});
+		var avoidVector = {
+			x: 0,
+			y: 0
+		};
+		obstacles.forEach(function (obstacle) {
+			var dx = self.x - obstacle.x;
+			var dy = self.y - obstacle.y;
+			var distance = Math.sqrt(dx * dx + dy * dy);
+			if (distance < 100) {
+				// Avoid if within 100 pixels
+				avoidVector.x += dx / distance;
+				avoidVector.y += dy / distance;
+			}
+		});
+		if (avoidVector.x !== 0 || avoidVector.y !== 0) {
+			var avoidAngle = Math.atan2(avoidVector.y, avoidVector.x);
+			self.targetRotation = avoidAngle;
+			self.rotationStartTime = LK.ticks;
+			self.rotationDuration = Math.random() * 60 + 30;
+		}
 		if (self.targetRotation === undefined || LK.ticks - self.rotationStartTime >= self.rotationDuration) {
 			self.targetRotation = Math.random() * Math.PI * 2;
 			self.rotationStartTime = LK.ticks;
 			self.rotationDuration = Math.random() * 180 + 90;
@@ -91,8 +139,32 @@
 		anchorY: 0.5
 	});
 	self.speed = 0.5;
 	self._move_migrated = function () {
+		// Obstacle avoidance logic
+		var obstacles = aquarium.children.filter(function (child) {
+			return child !== self && child !== fishGraphics;
+		});
+		var avoidVector = {
+			x: 0,
+			y: 0
+		};
+		obstacles.forEach(function (obstacle) {
+			var dx = self.x - obstacle.x;
+			var dy = self.y - obstacle.y;
+			var distance = Math.sqrt(dx * dx + dy * dy);
+			if (distance < 100) {
+				// Avoid if within 100 pixels
+				avoidVector.x += dx / distance;
+				avoidVector.y += dy / distance;
+			}
+		});
+		if (avoidVector.x !== 0 || avoidVector.y !== 0) {
+			var avoidAngle = Math.atan2(avoidVector.y, avoidVector.x);
+			self.targetRotation = avoidAngle;
+			self.rotationStartTime = LK.ticks;
+			self.rotationDuration = Math.random() * 60 + 30;
+		}
 		if (self.targetRotation === undefined || LK.ticks - self.rotationStartTime >= self.rotationDuration) {
 			self.targetRotation = Math.random() * Math.PI * 2;
 			self.rotationStartTime = LK.ticks;
 			self.rotationDuration = Math.random() * 180 + 90;
@@ -176,8 +248,32 @@
 		anchorY: 0.5
 	});
 	self.speed = 0.65;
 	self._move_migrated = function () {
+		// Obstacle avoidance logic
+		var obstacles = aquarium.children.filter(function (child) {
+			return child !== self && child !== fishGraphics;
+		});
+		var avoidVector = {
+			x: 0,
+			y: 0
+		};
+		obstacles.forEach(function (obstacle) {
+			var dx = self.x - obstacle.x;
+			var dy = self.y - obstacle.y;
+			var distance = Math.sqrt(dx * dx + dy * dy);
+			if (distance < 100) {
+				// Avoid if within 100 pixels
+				avoidVector.x += dx / distance;
+				avoidVector.y += dy / distance;
+			}
+		});
+		if (avoidVector.x !== 0 || avoidVector.y !== 0) {
+			var avoidAngle = Math.atan2(avoidVector.y, avoidVector.x);
+			self.targetRotation = avoidAngle;
+			self.rotationStartTime = LK.ticks;
+			self.rotationDuration = Math.random() * 60 + 30;
+		}
 		if (self.targetRotation === undefined || LK.ticks - self.rotationStartTime >= self.rotationDuration) {
 			self.targetRotation = Math.random() * Math.PI * 2;
 			self.rotationStartTime = LK.ticks;
 			self.rotationDuration = Math.random() * 180 + 90;